Proper English language usage
As time goes by, a language has additions to its trove of phrases and idioms in common use. Some of these are good additions, some are bad. This site warns about a few bad uses, and gives a little insight into why the good ones are so good.
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The phrase 'politically correct' is an oxymoron. The whole idea of politics is to make adjustments to what I want versus what you want. You want things one way and I want them a slightly different way. Politics allows us to compromise so that each of us gets almost everything we want - hopefully without resorting to fisticuffs. The word 'almost' is important.
The word 'correct' means 'right'. Or 'precise'. Or 'exact'. I mean, why do they call a ninety-degree angle 'right'? A square is not a square unless all four corners are exactly 'right'. So if a thing has been altered for political reasons, it cannot be correct, can it?
So when someone demands that you use a politically correct term for something, you are well within your rights to let them know how idiotic their demand is. And I hope you do that. The world needs a lot more quashing of idiocy.
As an aside, political correctness has been used as a weapon by revolutionaries who are determined to disrupt society. They use other weapons, too, such as social justice (another oxymoron).