Ethereum co-founder Vitalik Buterin has criticized the use of Google logins in cryptocurrency applications, arguing that it contradicts the core principles of decentralization. Speaking at Devconnect 2023 in Istanbul, Buterin expressed concerns about the reliance on centralized systems, which he believes undermines the purpose of decentralized networks. Buterin also emphasized the importance of strengthening the foundations of decentralized autonomous organization (DAO) governance and zero-knowledge (ZK) voting. He suggested that these improvements are crucial for developing reliable and truly decentralized applications.