Almost like they're kinda the same thing. A big part of what gets called "political correctness" is just learning what is actually civil and polite, but with people who aren't your nanna.
I think this is missing the heart of the issue.
You can say political correctness is just civility (wrt to issues of identity and whatnot). Almost everyone likes civility, so if political correctness is just civility, clearly no one should dislike political correctness! Yet, here we are; the vast majority of the US population, regardless of ethnicity, gender, and so on, dislikes political correctness (what does the term even mean? It doesn't really matter as I'll try to explain in a sec). But I'm quite sure they're not opposed to
civility.
Obviously, the issue is everyone has differing notions of what constitutes civility. And most of us perceive "political correctness" as being (most of) the difference between
our notions of civility and some other set of notions of civility. I.e., something imposed by your school or job or "society" or whatever.
Alright, so I'm guessing you propose a bunch of things that comprise a better civility than what most people subscribe to; just because most people think they're being civil, doesn't mean they are. That's all fine and well. I think it's civil to call people by their preferred pronouns and so on.
But most of us encounter quite a few notions of civility that we just don't think matter or should be required for civility. And many of us can justify that some idea of civility is dumb or excessive or conflicts with reality. One of my hobby horses is evo psyche. I firmly believe evo psyche provides very accurate explanations for a lot of things. But it pisses off
a lot of people. I think almost everyone would agree evo psyche is not PC. Proclaim all you want that political correctness is basically synonymous with civility, but it doesn't matter to me vis-a-vis evo psyche. I think evo psyche is awesome and that believing in it shouldn't contradict civility. And there's the rub. Most people despise political correctness because they have some firm opinion they perceive as being not PC. Whether it's evo psyche, irritation at weird pronouns (as we've seen expressed by people in this thread who
I'd consider civil), or wanting to just say "alcoholic" instead of "person suffering from alcoholism."
Frankly, this kind of effort to define political correctness isn't achieving anything. Opposition to political correctness is all about the real gulfs between notions of good and bad thinking/behavior. Americans of every demographic find a way to be miffed by this problem. Your approach is to define the problem away by claiming, actually, there is no gulf if you're a good person. Actually, there usually is.