> What's not appropriate is to choose the company with the highest salary, but whose owner's political views differ from your own, and then try to change that to something more suitable to your own.

Why is that inappropriate exactly? If my boss’ opinion is “unions shouldn’t exist because I think I’m entitled to treat people however I want/play them off each other/depress wages” why am I not allowed to rebel against that and organize with my coworkers? In fact, the right to do this very thing is enshrined in law.