If there's one article that shows the problem with Wikipedia it's the one you're quoting and it's sister https://en.wikipedia.org/wiki/Cultural_Marxism_conspiracy_th... which says that cultural marxism is an anti-semitic conspiracy theory.

And then you read https://en.wikipedia.org/wiki/Frankfurt_School and leave confused...

Edit: for example, here's a passage from the wiki page on frankfurt school.

Adorno and Horkheimer's Dialectic of Enlightenment, written during the Institute's exile in America, was published in 1944. While retaining many Marxist insights, this work shifted emphasis from a critique of the material forces of production to a critique of the social and ideological forces brought about by early capitalism.

So, culture? and marxism?