Justin Sun: AI and quantum risks make me more bearish on Bitcoin than before On October 16, 2026, Justin Sun @sunyuchentron shared during an interview with William Joy that the development of AI algorithms and the risks of quantum computing have made him more bearish on Bitcoin compared to before. He believes that the industry and investors holding Bitcoin through ETFs have not fully accounted for these risks. He also suggested that as AI advances in the field of mathematics, there might be risks of breaking existing cryptography through classical computing even before quantum breakthroughs occur. Source: William Joy