> The most common reason people leave companies is not compensation. It's usually about relationships, primarily with the boss but also coworkers

I can fully agree with that. I have only left one job to pursue "better" opportunities (a move abroad). I also regretted it later, as I left a great team. All the other exits were caused by me being tired of arrogant/ignorant managers.

Two out of three times it was about terrible working conditions and lack of a will to do anything to improve the situation.