The person you're responding to isn't claiming that SBF demonstrated remorse at his actions, he is claiming that SBF admitted to the crimes he's been accused of.
Whether or not he feels remorse for those actions is a separate concern. But yeah, he's guilty.
His tweeting through the FTX collapse was a masterclass in self-incrimination.
Given his complete lack of life experience and rather sheltered existence, I strongly doubt this type of shallow self analysis. He's purposefully lived a life where he gets to avoid those responsibilities, instead, preferring to live with payrolled groupies in a mansion doing drugs and stealing money all day.
I would assign a near 0% likelihood of this . For one, why would he need to hack his own exchange? Just quietly move funds to a secret address he know the private key to. Done. Being the CEO he would have 'god mode' authority to do this, and being a private company no audits anyway.