Woofun AI reports that CZ expressed regret regarding BitMEX's closure, highlighting the platform's role in introducing 100x leveraged perpetual contracts in 2014. He noted that BitMEX's restrictive BTC-only deposits and daily multi-signature withdrawal process effectively prevented long-term hacker attacks. CZ stated that the four co-founders pleaded guilty to Bank Secrecy Act violations, resulting in $10 million fines each and home detention without prison time. He attributed the platform's inability to survive to the "War on Crypto" under the Biden administration, confirming that BitMEX is winding down orderly with user withdrawals still active.