Cultural Marxism is a way of externalizing unhappiness. It's not your fault you are unhappy, society, specifically authority and status structures are to blame, particularly anything patriarchal. Smash them and your happiness is assured.
It's a big lie, the kind people believe if you just repeat them often enough and don't allow anyone to question them. People who propagate the big lie become the very thing they pretend to be against only more so, an abusive authority structure which will not examine itself because it doesn't even recognize what it is.