But it's relative, he already cashed out $3B by this pont? The way I see it he evaluated harm to his health and well-being from doing something he didn't want

But it's relative, he already cashed out $3B by this pont? The way I see it he evaluated harm to his health and well-being from doing something he didn't want vs vesting tail of his grant and chose a sane option, because he already vested enough. Similar stories on smaller scale happen all the time with VPs and directors after re-orgs.