My impression is that a lot of people don't know what a good coach is. I've been watching the warriors since the Mussellman days, and there has not been a better coach than MJax.
He has the locker room
He trusts his players and lets them learn by failing
He lets the team play through tough times - as someone else pointed out Phil Jackson and Pop both do the same thing.
He has coached the best defense in the West, personnel or not.
He has also coached one of the best offenses in the league in prior years, personnel or not.
Switching coaches is a huge risk in itself. As this thread suggests, there aren't even any viable candidates.
Sure he makes mistakes, but let's not forget a coach who started Magette at Center, or a coach who let Monta have absolute free reign on Offense.
As far as I am concerned, a lot of criticism of MJax is just anecdotal or vague. "he is not an X/O coach" .. what does that even mean? "the assistants do all the world" .. how do you know? do you go to practices? and what's wrong with delegating? Some of the greatest coaches delegate. "he doesnt call timeouts" .. this is not rocket science.. he has a strategy, and you dont know it. Face it, you're a sunday morning quarterback - you've never coached at this level, you don't quite know what's going on, and you just hear the popular narrative, and it reinforces your own limited knowledge.
Most importantly, the players believe in MJax, and he believes in them. Putting this in jeopardy by switching to some other coach is unwise.