That’s the motte. The bailey is ruthless enforcement of leftist ideology. Critical Theory is basically a hand grenade that leftists tossed at western civilization in order to burn it all down and make way for communism.

The “infinite equally valid interpretations” bit used to run into the brick wall of “there are constraints within the text that make your interpretation impossible”. That shit got tossed when the leftists took over.

Another example is the concept of “lenses”. We used to employ different these as viewpoint exercises - feminist lens, masculine lens, etc. But then the leftist lenses became the default while every other lens became verboten.

Sort of, until they are able to enforce an interpretation that they like, then that one is canonical and everyone who thinks otherwise is a Nazi bigot.