One minor clarification: "lent" should be "stole". If I can't pay my mortgage, I'm not allowed to go break in to my neighbor's house to steal some cash that I'll "borrow" in the hopes of paying back later.
FTX's Ts&Cs we're very clear - customer deposits were not FTX's to lend.
This is a simple, straightforward case of fraud and theft. No additional "crypto-specific regulations" are needed to reach that conclusion.