The point I tried to make was not that he should be resentful about being kicked out, but that he doesn't really care that Meta is unethical and endangers billions.

Even if nothing changes (the regulatory action is optional), he's happy to contribute (he insists, in fact). Even among people who don't want him there.

The points you’re making are personal attacks about the whistleblower. They don’t focus on the substance of the accusations (insecurity). Instead, they focus on your idea of their career motivations and their personality.