these HR systems also use "bad culture fit" to encode red flags they can't legally record: health issues, political disagreements. This is absolutely the case.

these HR systems also use "bad culture fit" to encode red flags they can't legally record: health issues, political disagreements. This is absolutely the case. That said, you're probably not going to get fired over your politics unless you're either (a) seen as a union supporter (or, worse, organizer), or (b) so far right you've already been cancelled and are now a PR liability. If you're in the middle, they usually don't really care who you vote for, at least not enough to punish you for it.