Ethereum’s L2 Bet Faces Its Harshest Critique Yet

When Logan Jastremski says he has not seriously thought about Ethereum since 2021, it sounds like provocation. When he calls L2s “a failed experiment” and says appchains failed outside of Hyperliquid, it sounds even sharper. But beneath the social-media punchline is a serious debate that has been building across crypto for years: did Ethereum choose the right scaling path, or did it outsource user experience to a maze of fragmented networks while faster L1s and purpose-built chains captured the next generation of activity?

The argument is not just about Ethereum’s price. It is about the architecture of crypto itself. Should blockchains scale by making the base layer faster, simpler, and cheaper? Or should they become settlement layers for rollups, app-specific chains, and specialized execution environments? Ethereum chose the second path. Solana, Hyperliquid, and other high-throughput systems represent the opposite instinct. Jastremski’s critique lands because the market is now asking whether Ethereum’s modular roadmap created a durable advantage or a coordination problem disguised as sophistication.

The Logan Jastremski Critique

Jastremski’s core claim is brutally simple: L2s never made sense. In his framing, a transaction is just bytes. An L2 compresses more bytes into fewer bytes before settling somewhere else. But if the point is compression, why apply it to a low-throughput chain such as Ethereum instead of a high-throughput chain where the same compression could theoretically produce even more capacity?

That is the heart of the critique. Rollups can batch transactions, compress data, and post proofs or commitments back to Ethereum. But the settlement layer still matters. If the base chain is expensive, congested, or limited in throughput, the entire stack inherits those constraints in some form. Ethereum’s answer has been to make the base layer more rollup-friendly, especially through the Dencun upgrade and EIP-4844, which introduced blobs as cheaper temporary data space for rollups. Ethereum.org describes Dencun as an upgrade designed to make rollup storage cheaper through proto-danksharding.

But Jastremski’s point is not that rollups do nothing. His point is that the same engineering concept could be more powerful when attached to a chain already designed for high throughput. In that view, Ethereum’s L2 roadmap is less like building a superhighway and more like adding express lanes to a road that was never designed for modern traffic.

Why Ethereum Chose Rollups

To understand the disagreement, it helps to remember why Ethereum chose this path in the first place. Ethereum’s base layer prioritizes decentralization, neutrality, and security over raw speed. The network’s culture has long been skeptical of simply increasing hardware requirements to boost throughput, because doing so could reduce the number of people able to run nodes and verify the chain independently.

Rollups were the compromise. Let execution happen elsewhere, compress the results, and use Ethereum as the settlement and data-availability anchor. In theory, this keeps the base layer credibly neutral while letting users transact cheaply on L2s. It also allows experimentation. Optimism, Arbitrum, Base, zkSync, Starknet, Scroll, Linea, and others can each optimize differently while still orbiting Ethereum.

That is the strongest defense of the roadmap. Ethereum did not accidentally become modular; it deliberately chose modularity to preserve the properties that made it valuable in the first place. If one believes settlement credibility is the scarce resource in crypto, then Ethereum’s L2 universe is not a failure. It is the product strategy.

The problem is that users do not experience product strategy. They experience wallets, bridges, gas tokens, fragmented liquidity, confusing withdrawal times, incompatible app deployments, and the constant feeling that the same ecosystem has been split into too many surfaces.

The User Experience Problem

This is where the anti-L2 argument becomes hardest to dismiss. Ethereum L2s lowered fees, especially after Dencun, but they also multiplied complexity. A user who wants to move from Ethereum mainnet to Base, then to Arbitrum, then to Optimism, then to a specific app on another rollup, may be technically inside the “Ethereum ecosystem” the whole time. But from a product standpoint, it can feel like using several different chains.

Liquidity is fragmented. Assets are wrapped in different forms. Bridges introduce risk. Wallets must explain networks, tokens, gas, approvals, and bridging routes. Developers often need to decide where to deploy, which ecosystem incentives to chase, and how to manage cross-chain state. For professionals, this is manageable. For mainstream users, it is a mess.

This is why Solana’s pitch has resonated. The user does not need to care about modular theory. The apps are mostly on one high-speed chain, transactions are cheap, and composability is direct. Hyperliquid pushes the argument even further: build the whole environment around one product category, perpetual futures trading, and make the chain serve the product rather than forcing the product to adapt to generic blockchain constraints.

That is the reason Jastremski’s “outside of Hyperliquid” caveat matters. He is not simply saying all experimentation failed. He is saying the experiments that worked did so because they were tightly tied to product demand, not because they fit an abstract modular roadmap.

Hyperliquid and the Appchain Exception

Hyperliquid has become the obvious counterexample to the claim that appchains failed. It is purpose-built around on-chain perpetual futures trading, with performance and user experience designed around that specific market. DeFiLlama data shows Hyperliquid handling enormous perpetuals volume, and several market reports have highlighted how its 2025 activity put it in the conversation with major centralized exchanges by notional trading volume.

That is important because Hyperliquid does not feel like a theoretical chain in search of users. It feels like a product with its own infrastructure. The chain exists because the app needs it. That reverses the logic of many appchain projects from the previous cycle, where teams launched chains first and hoped activity would follow.

The lesson is uncomfortable for both Ethereum and the broader appchain thesis. Appchains may work when they serve an application with clear, recurring, high-value demand. They work less well when they are merely branding exercises, incentive farms, or attempts to capture token value without solving a user problem.

Hyperliquid’s success does not prove that every app should become a chain. It proves that some products are important enough to justify their own chain.

Is Ethereum “Largely Dead” Institutionally?

Jastremski’s harsher claim is that Ethereum is “largely dead” from an institutional and product-use-case standpoint and may be “the most overvalued asset in the world.” That is where the argument moves from architecture to valuation.

There is a real institutional frustration with Ethereum. ETH no longer has the cleanest story in crypto. Bitcoin owns the monetary premium narrative. Solana owns much of the high-throughput consumer and trading narrative. Hyperliquid owns the on-chain perp exchange story. Stablecoins increasingly settle across multiple chains, not just Ethereum. Tokenization is still real, but institutions often care more about compliance, distribution, and operational control than Ethereum ideology.

Ethereum also faces a value-accrual problem. If most activity moves to L2s, and L2 fees fall dramatically, how much economic value should flow back to ETH? The “ultrasound money” narrative weakened when fees dropped and ETH burn dynamics became less compelling. If Ethereum becomes a low-cost settlement and data layer, it may be more useful but less obviously lucrative for ETH holders than earlier bull-market narratives suggested.

Still, calling Ethereum dead is too easy. Ethereum remains the largest smart-contract settlement layer by ecosystem depth, developer mindshare, stablecoin liquidity, DeFi history, and institutional familiarity. L2Beat tracks a large and active L2 ecosystem, and Ethereum still anchors many of the most valuable crypto applications and assets. Dead ecosystems do not have dozens of rollups competing for users, major stablecoin settlement, large DeFi protocols, and constant governance fights over scaling direction.

The more precise critique is not that Ethereum is dead. It is that Ethereum’s valuation depends on a future where settlement credibility becomes more valuable than execution dominance. That future is plausible, but no longer uncontested.

The Compression Argument Has Limits

Jastremski’s “transactions are just bytes” argument is elegant, but it compresses the debate too far. L2s are not only about byte compression. They are about security inheritance, fraud proofs or validity proofs, data availability, execution environments, sovereignty, developer tooling, and settlement guarantees. The point is not merely to make five bytes into one byte. The point is to let users transact in a cheaper environment while still relying, to some degree, on Ethereum’s security and neutrality.

That said, the critique exposes a weakness in Ethereum discourse. Too often, L2 proponents speak as if technical scalability automatically produces product-market fit. It does not. Cheaper transactions are necessary, but not sufficient. Users need coherent experiences. Developers need distribution. Liquidity needs concentration. Institutions need clarity. Applications need reasons to exist beyond “we are on an L2.”

The best version of the L2 thesis is not “compression is magic.” It is “Ethereum is the most credible settlement layer, and rollups are the best way to scale without sacrificing that credibility.” The market is now testing whether enough users actually value that credibility in daily product use.

Failed Experiment or Mid-Cycle Repricing?

The phrase “failed experiment” is powerful because it gives a clean answer to a messy situation. But crypto infrastructure usually does not fail all at once. It gets repriced. Narratives lose dominance. Capital rotates. Some parts become invisible plumbing, some become dead weight, and some become stronger after the hype leaves.

L2s have not failed in the narrow sense. They process real transactions, hold real assets, and host real applications. Dencun made them cheaper. Base in particular has shown that a well-distributed L2 connected to a major company can attract users and developers. Arbitrum and Optimism still matter. ZK rollups continue to push technical boundaries.

But L2s have failed to deliver one simple thing so far: a unified Ethereum user experience that feels obviously superior to using a fast monolithic chain. Until that changes, critics will keep saying the modular roadmap solved Ethereum’s engineering problem while worsening its product problem.

Appchains have a similar record. Most did not become essential. Hyperliquid did. That means the model is not dead, but the bar is far higher than the last cycle suggested. An appchain needs a product so strong that users accept the chain because they want the app, not the other way around.

The Real Battle: Execution Versus Settlement

The deeper fight is between two visions of crypto value. One says execution wins. Users go where the apps are fast, cheap, liquid, and simple. In that world, Solana and Hyperliquid look like the future, while Ethereum risks becoming a prestigious but overcomplicated backend.

The other says settlement wins. The most valuable layer is the one that remains credibly neutral, secure, decentralized, and trusted by the widest range of assets and applications. In that world, Ethereum can afford to lose some front-end activity because it becomes the court system, clearinghouse, and data anchor for a broader financial internet.

Both visions can be true in different markets. Retail trading may prefer speed and simplicity. Institutions may prefer settlement assurances. High-frequency consumer apps may choose monolithic chains. Large financial assets may prefer Ethereum’s security and history. The mistake is assuming one architecture must dominate everything.

Ethereum’s Real Problem Is Narrative Discipline

Ethereum’s biggest threat may not be Solana, Hyperliquid, or even L2 fragmentation. It may be that Ethereum has become difficult to explain.

Bitcoin is digital gold. Solana is the fast consumer chain. Hyperliquid is the on-chain derivatives venue. Ethereum is… a decentralized settlement layer for rollups, with modular data availability, shared security ambitions, L2 ecosystems, restaking, account abstraction, blobs, and a long-term roadmap toward more scalable decentralized infrastructure.

That may be intellectually strong, but markets reward simple stories. Product users reward simple experiences. Ethereum’s complexity is defensible only if the end result feels simple to the user. Right now, it often does not.

This is why Jastremski’s critique cuts through. It gives people a clean alternative story: Ethereum was early, people made money, the ecosystem became overvalued, and better architectures have since emerged. That story may be incomplete, but it is easy to understand.

The Verdict

L2s were not a failed experiment in the sense that they do not work. They work. They lowered fees, expanded capacity, and kept Ethereum relevant as a settlement layer. But they have not yet delivered the kind of seamless, mass-market experience that would silence the critics. The technology succeeded faster than the product layer around it.

Appchains were not a failed experiment either, but most appchains failed because they confused infrastructure ownership with user demand. Hyperliquid stands out because it built around a product category with clear, intense demand and made the chain part of the product advantage.

Ethereum is not dead. But it is no longer entitled to be the default answer to every crypto infrastructure question. Its valuation now depends on whether settlement credibility, L2 ecosystems, and institutional trust can outweigh the gravitational pull of simpler, faster, more integrated chains.

Jastremski’s critique should not be dismissed as anti-Ethereum theater. It is a useful stress test. Ethereum’s defenders need to answer not with roadmap diagrams, but with products that feel better, liquidity that feels unified, and value accrual that makes sense.

The modular future may still win. But it has to win in the market, not just in architecture debates.