F2Pool co-founder Wang Chun criticized KYC (know-your-customer identity checks) in a post on X, saying the system discriminates against people who move freely and stay in different hotels. He also characterized KYC as meaning "Kill Your Customers," or driving customers away, and compared its demand for a permanent address with binding people to land under feudalism. The post cited ShapeShift founder Erik Voorhees, who has said KYC continues to expose innocent users to risks.