Vitalik Buterin has expressed concerns over the “based” roll-up strategy in Ethereum’s scaling roadmap, highlighting issues with combining security, scalability, and interoperability into a single model. Critics argue for a modular approach, like Cosmos’ Inter-Blockchain Communication (IBC) protocol, which separates these concerns and promotes app chain independence. Buterin suggests Ethereum can benefit from similar strategies to improve layer-2 rollups without centralizing security. Source: https://coinpedia.org/crypto-live-news/vitalik-buterin-critiques-ethereums-roll-up-strategy/