I don't disagree with you, but I think one of the understated tragedies is that this shrill weirdo extremism (usually an ideology of privileged mainstream people with white savior complexes; note, for example, that most Latinos consider "Latinx" ridiculous) distracts people from the populist, inclusive platform of legitimate leftists (as opposed to corporate centrists taking virtue-signaling stances while not changing anything they actually do). The staunch but watered-down (from an economic perspective) "leftism" that is becoming mandatory on college campuses is a product deliberately engineered by Kapital to make upper-middle-class liberals and leftists (yes, there's a huge difference, but 85% of the country sees us as the same) look a certain way, and one that doesn't suit our goals.
Thing is, our society is still as racist, sexist, religiously bigoted, and classist as ever; it's just that the rich have gotten good at using chatter about these issues (chatter of a kind that will never actually progress toward solving them, because that's not what capital wants) to divide people.
It doesn't advance the objectives of liberals or of leftists to have wankers going on about how "math is racist" (it isn't). It just makes us look like idiots.