And this isn’t even liberal in the old fashioned sense of the free quest to ascertain, by testing and examination, what truth and beauty are (as opposed to being utterly doctrinaire about it).
This is illiberal, because it unmoors perceptions from all canons of meaning. We can debate objective meaning without doing violence to our nature, but we can’t repudiate it as a concept.
I use the term leftist rather than liberal, because today’s left isn’t liberal at all.