Not necessarily, there are plenty of non-normalized things that are not political. Like I said, being political is first and foremost an attitude, a very specific attitude that nothing matters except your very own pet issue, and the willingness to let everything and everyone burn in order to push your view or just flaunt it.

>would it be political to bring your non-heterosexual spouse to a company function where other employees may bring their spouses?

Depends on you and your coworker attitudes, but generally no. A function like this would probably be very laid back and casual, it's not even "work" by a strict definition, so I can't think of a way your non hetero spouse would be a problem. Company asked for people to bring spouses, company got people who brought spouses. If they wanted Man/w/Woman only, they should have asked for it, subtly or explicitly.

Of course, the kind of people I have in mind can still ruin this, just like they ruin everything. They can always come dressed in a pride flag and act insufferable. And that's exactly my point, being political is, as I think of it, a personality. You can be the most boring normative person in existence and still be political, you can be the most radical and norms-challenging person in existence and still shut up and fix the damn bug because nobody got the time and patience to fight your moral crusades.

Even a few "slips" here and there could be forgiven, we all get political if somebody pushes our buttons enough after all. But repeated, deliberate attempts to be pushy and transgressive and an oppressed victim? That's just something else. It can always be recognized.