Systems of Politesse
The trouble with PC is that it’s a system of politesse, and like all such systems, it is a stupid, absurd, arbitrary, and hypocritical imposition by clueless self-righteous elites. (I call this observation the “Brat’s Whinge”.) But on the other hand, some such system, however stupid and hypocritical, is necessary for the survival of civilized manners. (I call that observation the “Geezer’s Wheeze”.)
Both Brat’s Whinge and Geezer’s Wheeze are correct. And really people don’t mind doing the idiotic humility rituals, as long as those idiotic rituals don’t waste too much time, and don’t change too much from year to year. But people hate to memorize a new list of taboos.
Pro tip: Never accidentally insult anyone who matters. And they get to say what’s insulting. But who matters changes with the circulation of aristocracies.