According to ChainCatcher, Hayden Adams, founder of Uniswap, said that L2 chains focused on Ethereum expansion should not focus on immutability until the Ethereum blockchain is ready. Adams believes that it is "meaningless" to expect L2 networks to "never upgrade again or force large-scale migration." He explained that if some migrate and some do not, the nature of users and applications connecting to each other on the L2 chain will destroy composability.
The Ethereum Foundation has said that L2 chains are its expansion plan, in response to which Jonathan Colón, head of the ecosystem at NFT market Rarible, called L2 networks a "money grab." Adams responded: "The whole plan to scale Ethereum is 'L2', we either make them work or change the roadmap (I prefer the former). Calling them money grabs (or) saying they need to be immutable does not change that. They are expensive to build, and L1 does not provide funding for this work."