We had an A/P manager who chewed her way through 3 entire staffs before management decided the problem was actually her. Two of them collectively quit in a group on one day! That was the most outrageous I think. How did it take FIFTEEN people quitting because of her management before they fired her?
Also one manager who came in shitface drunk and swinging when she got fired. That was the most dramatic.
Also, not everyone that is good at a job has the personality to be in management. I've found myself in several management roles before I realized I absolutely hate being responsible for other peoples' work and am just not cut out for it.
I use those people that I used to work with as a "what not to do" guide.
Sometimes I want to say to staff "You keep up shit like this and you wont have a job much longer" but I remember how fast people turned on that guy, so instead I have a sit down with them and say "I cant keep not reporting this stuff, its going to risk MY job. So I need you to lift your game because we're friends and all but I'm not going to get fired to protect you and once I start reporting it up the chain, I cant fo anything to protect you"
This is true and I've seen it. However, I still think that it's possible someone above didn't want to acknowledge that they were a bad read of character. That's how it felt in the situation I saw firsthand anyway.