It’s common knowledge to keep your mouth shut at this point. You don’t need to have highly-regarded lawyers advising you to know this, but SBF had (at least) two: his parents, who were with him in the Bahamas.

Even if he was under a delusion that the rules wouldn’t apply to him, we can assume his parents would do everything in their power to reign him in if this was not some sort of strategy.

From what I understand of the interviews, he carefully avoided going into details, and instead used the opportunity to present himself as an “aw, shucks” borderline simpleton with a heart of gold who just got in over his head. He was going to be arrested either way, so how do you see this as not a carefully-planned attempt to improve his public image?