I feel if it was for a purpose like this it could be contextualized to the employee (which IMO is necessary if they're going to write anything that is useful for any purpose beyond personal interest)
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.