Ah, but the context of the thread is more than that! The context is around outrage that he got promoted. And being promoted is about a lot more than if someone is a good boss, as painful as that is for many folks working for such a bad boss.
It’s possible to get an immense amount done and/or be remarkable effective despite being a bad boss - if the folks working for them put up with it.
And it isn’t illegal to be a bad boss, as long as someone is bad in specific ways and not others.
No one claimed there was. They said that not doing it makes him a bad boss. You seem to be in agreement.