If you don't think there would be a shareholder revolt against the board, for simply exercising their most fundamental right to fire the CEO, I think you're missing part the picture.
like, you get me, the board of directors is not the only actual power within a company, and that was proven by the whole scandal of Sam being discarded/fired that was made by the developers themselves. they also have the right to exercise their right to just not work at this company without the leader they may had liked.