So Vitalik recently caused a stir on X with sharp criticism of the Ethereum layer-2 ecosystem. Basically, he said many L2 projects are just copying and pasting existing designs without truly innovating. This comment immediately became trending in the crypto community because it was quite blunt.

His argument is quite clear. He said there are already many chains that only copy the standard EVM architecture with optimistic bridges and a week delay, then market themselves as an integral part of Ethereum, even though in reality they are more like standalone networks. Vitalik emphasized that 'vibes must match the substance'—meaning don’t claim to be tightly integrated with Ethereum if in practice they are far from Ethereum’s core infrastructure.

One point he highlighted is that Ethereum itself is undergoing a significant scaling process. So the old justification that L2 is 'Ethereum but cheaper' is starting to fade because the base layer capacity will be much larger. This means not all projects need to copy the same model.

However, Vitalik did not outright reject L2 entirely. He outlined two valuable directions. First, specialized application systems that are tightly integrated where Ethereum remains the main component for settlement and verification. Second, chains run by institutions or applications that publish cryptographic proofs or state commitments to Ethereum. These two models are not Ethereum, but they still push similar goals of transparency and verifiability.

Reactions from the L2 ecosystem are quite interesting to observe. Steven Goldfeder from Arbitrum responded that their network should be seen as a close ally of Ethereum, not Ethereum itself. Jesse Pollak from Base also said rollups should offer more than just low costs as the base layer improves. Some leaders from other projects even interpreted Vitalik’s criticism as a push for clearer positioning rather than an existential threat—this encourages L2s to define the unique value they bring.

This debate actually reflects a trend that has been developing for months. With Ethereum’s costs remaining low and the base layer throughput increasing, questions about L2 differentiation are becoming more urgent. So Vitalik’s critique is more like a reality check for an ecosystem that might be too comfortable copying established models. Interesting times for the layer-2 landscape.