Yes and he doesn't understand any of it.
Really? Which part? Be specific.
Current critical theory and intersectional identity politics in the universities comes out the french postmodernism movement in the 1960's, which is all he really says. Most people in university in the humanities will be introduced to postmodern theory (Foucault, Derrida etc). That's really most of what he says about postmodernism. I happen to like postmodernism and critical theory, it's pretty brilliant, but it's also been politicized, which causes social conflict.
As for "cultural Marxist", it's an odd term i don't use, but he means that Marxism is about using equality of outcome to destroy oppressive power structures in economics. Culturally, this is being done by postmodernists (today's "woke") who are in favour of equality of outcome instead of merit with race/gender quotas etc so that everyone needs to be the same regardless of merit, and any discrepancies in a the workplace or student admissions etc in group identity numbers is seen as being due to oppression. I mean that's 2021 to a tee.
Some may agree (include many posters on this forum) with that critical theory/postmodern approach, and it does have some merit because racism/sexism oppression clearly occurs. You guys just don't agree with politics, because he's anti-postmodernism and you guys are clearly postmodernists so you seek to discredit him. Yay culture war.