I think a lot of people were (quite rightly) a bit underwhelmed with the appointment but most backed him until his tactics unravelled.
I can sympathise a bit with him having a philosophy, thinking he had the players to pull it off and then watching those players disappear 1 by 1 and not be adequately replaced.
However at some point you need to see you don’t have the players for it, swallow your pride and change things up. If he can’t do that then he needs to fuck off sharpish.