Some of the "ism" culture war teaching in academia is indeed trite and silly.
But it's far less silly than Fox News and the entire right-wing media machinery - which most recently somehow managed to persuade tens of millions of Americans that a valid election was stolen, that Covid is a hoax, and attacking your own political representatives is a valid expression of democracy.
Honestly, compared to that having to pay attention to pronouns or learn something about black history is a complete non-issue.