Why US Dollars? FTX.us was domiciled in the US but FTX.com was in Bahamas. Why not some other arbitrary currency? Why not Bahamian dollar? Why not in Bitcoin?
FTX has paid close to 1 billion dollars in fees to army of lawyers, consultants, bankers etc. in what was even at the time an 8 billion dollar bankruptcy. Even if FTX froze in time and did nothing at all, its assets would've recovered completely that 8 billion gap in its funding. It's been a boon to everyone involved and they're taking full advantage.
I have no sympathy for FTX. It was a clear case of theft. However the creditors are getting robbed twice. Once by FTX, once by the bankruptcy proceedings.