The “just find another job” trope is tiresome and overused. This seems to be commonly thrown around in a hand-wavy way, and it ignores a large part of reality.
The idea that one can just move to another job is a luxury in many places. Many areas have only one or two employers, so there’s simply no place to go.
There’s also the fact that no matter where you go, you will likely always find someone you don’t get along with. Learning to deal with those people is a life skill.