Eric Conner, a prominent Ethereum core developer, has left the community due to concerns over leadership and a lack of decentralization. This came after Vitalik Buterin claimed sole authority over the Ethereum Foundation and dismissed calls for a leadership shakeup. Conner has now switched his focus to artificial intelligence, initially working on building an evolving AI agent called Freysa.ai. Buterin has attempted to restructure the Ethereum Foundation's leadership to improve communication and emphasize technical expertise.