100% inside job as a pro hacker that could be able to do something like that wouldn't send some of the hacked money to his Kraken account, which he allegedly did. Kraken chief security officer (that Nick Percoco guy) confirmed that they know who is behind that account.
https://twitter.com/c7five/status/1591433304871690242Unfortunately it happened and actually they couldn't escape. I'm pretty sure it's an inside job even if no one backs up these allegations with evidence, but really it's really a job that makes people more and more frustrated as a result of FTX.
After some people lost money due to FTT dump, now it's the turn of all FTX users to lose their funds. It's heartbreaking.