Sure, but if they keep changing the magic words every few years, they have that many more ways to get mad at people for not using the temporarily “correct” terms, and it’s important to lefty power brokers that they have ways to signal themselves as the elect and correct, and others as cancelable heathens. Mostly other lefties, of course, righties don’t give a fuck about their language games and internecine “who’s holier” competitions among lefties are just as important to them as any left-right battle.