Uniswap founder Hayden Adams has reignited the debate around Ethereum’s scaling plans, warning that if the network drifts back toward relying on Layer 1 (L1) instead of sticking with its Layer 2 (L2) roadmap, it could fall behind rivals like Solana.
In a series of tweets, Adams didn’t mince words: if Ethereum decides to keep all key DeFi activity on L1, Solana may have the upper hand with a stronger team, clearer roadmap, and better scaling approach.
“If the plan is to do DeFi on L1, Solana has a better roadmap and approach,” he said. “Ethereum has spent 5+ years building towards L2-centric scaling. You want to throw this away at the final stretch — why?”
His comments were in response to Bankless co-founder David Hoffman, who argued that Ethereum’s L1 still plays a vital role in DeFi and should remain strong even in a rollup-driven future.
But Adams pushed back hard against what he sees as shifting narratives. He said Ethereum’s community needs to “pick a lane” instead of constantly adjusting its strategy, warning that indecision could undermine years of technical progress.
“I’m against confused takes where we say Ethereum is rollup-centric, but everything important still lives on L1,” Adams said. “We need to support L2s if we want to scale. Shifting strategy every month isn’t the answer.”
He also criticized the idea of taking a “do-it-all” approach, suggesting that trying every strategy at once could be worse than committing to none at all.
The disagreement centers on how Ethereum should position itself long-term. While Hoffman agrees with the need for L2s, he believes Ethereum’s L1 should also improve — through lower block times and stronger infrastructure — to remain competitive.
“The L1 should also work toward goals like faster block times,” Hoffman said. “Scaling the L1 helps L2s too. It’s not either-or.”
Adams responded that he’d be thrilled if Ethereum L1 could reach 0.2-second block times and massively scale throughput — but added, realistically, that goal is closer to being achieved on L2s, not L1.
At the heart of the debate is a larger question: What should Ethereum optimize for in the next phase of its evolution?
After years of investment in L2s like Arbitrum and Optimism, a growing chorus wants L1 improvements brought back to center stage. But Adams is warning against abandoning the rollup roadmap just as it’s starting to deliver.
“This isn’t about Twitter narratives — it’s real engineering work,” he said. “We’re way closer to scalable DeFi with L2s than L1.”
With Ethereum’s future scalability and competitiveness on the line, the conversation isn’t just about infrastructure. It’s about direction — and how firmly the ecosystem is willing to commit to it.
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