Vitalik Buterin, co-founder of Ethereum, criticized former FTX CEO Sam Bankman-Fried at the Ethereum Devconnect conference in Argentina. Buterin stated that FTX's centralized structure starkly contrasts with Ethereum's decentralized principles. He highlighted that Ethereum is designed to be a community-driven platform that inherently 'cannot do evil,' whereas FTX required users to trust its centralized system to act ethically.