My understanding from that document is that the bankruptcy managers are just beginning to piece together an accounting of what happened to the money at FTX, and even that accounting is incomplete because personal laptops belonging to executives are being held back by Bahamian authorities. So “FTX wasn’t hacked” is just a hypothesis at this point. Hacking probably wasn’t the major contributing factor to the exchange’s financial problems would probably be a more accurate statement.
I mean FTX had over 300 million dollars moved out of company funds, without company authorization, by parties unknown, and with insufficient monitoring to even know it happened until third parties let them know. So kind of depends on your definition of hacked, I guess.
One way to look at FTX is as a horse race between multiple catastrophic failure modes. In this case the financial malfeasance "won". Maybe in another universe where interest rates stayed low for another year we'd see FTX go down to a hack instead.