Uniswap founder Hayden Adams has defended Ethereum Layer 2 (L2) solutions against claims that they are "parasitic." Adams argues that L2s play a crucial role in Ethereum's scalability by handling high-cost, engineering-intensive tasks, which aligns with Ethereum's rollup-centric roadmap. He suggests that for Ethereum to become more self-sufficient, it should adopt a more engineering-driven approach rather than treating all challenges as research problems.