[zcw100]

You're asking the wrong question. You should be asking why do I think so many bosses are bad and who are the people who agree or disagree with that assessment. What's a bad boss for you might be the perfect boss for someone else and that someone else is probably the person in charge who hired them.

It's like a prisoner asking, "Why are there so many bad prison guards?. They tell me where to go and what to do. If I get out of line they use increasingly coercive tactics to bring me back into line and if it gets too bad they ostracize me and put me into a box."

That prison guard is probably going to get an award for prison guard of the month and a small bonus. Bad for you, good for someone else.