If I told you that I'd be replacing your broken windshield, would you understand that I'd be simply removing your windshield and not putting anything in its place?
>There are people on the fringe left (and fringe right) who want to do exactly that.
I should have been more specific; the group which is accused of being "cultural Marxists" includes the Frankfurt School which did nothing you describe nor expounded any intention to. Of course they exist, but the people accused of being those people who exist are not those people.
>That is precisely what intersectional feminism is about.
That's true, though it does little to hold for Peterson's argument that "Marxists" in general have moved to such a position, or have mutated class theory rather than simply adding to it. Marxists, orthodox and otherwise, still think in terms of class.