That's not what i read in the article, and i think noone is making that point. You deformed the argument to make it appear ridiculous, whether consciously or not. It's as if you claimed anti-sexism in the cinema industry means never again having men on screen.

There is no thought police coming for you if you disagree with a rather-insignificant change. But of course feeling threatened by better representation of different cultures in education is weird.

That kind of argument is directly rehearsed from the neofascist international movement (Generation Identitaire & friends) and their "great replacement" / "clash of cultures" theory. I'm not saying you belong to that movement or that you're a despicable human being in any regard (i've never met you and barely interacted with you), but i would recommend to question that kind of racist narrative pushed by mainstream media in the last decade or so (especially since the start of the so-called "migrant crisis").