Also no non-disparagement clause in my agreement. FWIW I was one of the people who negotiated the severance stuff after the 2018 blowup, and I feel fairly confident that that holds for everyone. (But my memory is crappy, so that's mostly because I trust the FB post about what was negotiated more than you do.)
I'd be curious to get takes on this from people who know SBF better. In my (limited) impression from working with him, he seemed both extremely ambitious and hard to influence; I'm doubtful that EA ambition culture had a big effect on him.
That said, I think agree with the general takeaway of tempering the pro-ambition framing . I think it's important to cultivate "humility / thoughtfulness / integrity" as EA ideals, and in particular as virtues that ought to be highly prioritized when one has a lot of influence.