The brutal reality being its probably most capable in that domain. They'll freely admit they're not "the never the smartest guy in the room" and their decision record proves it
The higher up the ladder, the more incompetent they become IMO.
If you're in the seat, no one will force you out. They'll leave, but they can't make you leave.
Can you clarify the point you’re trying to make? C-level people are forced out all the time. Even the CEO reports to the board.