That doesn't really make a lot of sense. Customers sent him dollars to buy crypto. So any dollars that came in were almost immediately turned into crypto. The only way for those crypto assets to be missing is if the crypto was transferred.
The dollars were used to purchase a claim on crypto payable by the exchange FTX. But it is not at all clear at this point that if someone sent money to them ("them" being some kind of quantum superposition of FTX and Alameda Research) and used it to purchase Bitcoin on the exchange, that FTX ever did anything other than update a number in their internal customer-facing ledgers. They had only $639,000 in Bitcoin on their balance sheet in their bankruptcy filing. And obviously the crypto is not all sitting at FTX ready to meet customer withdrawals or they would never have paused them in the first place.
