I think that postmodern critical theory rather is exploiting our inattention to education.

It contains some intuitively very appealing ideas--including, ironically, everything you need to avoid having to justify your ideas--and it's really easy compared to the liberal alternative. If you don't engage with ideas at all, it's a pretty weird beast. But if you do engage with ideas, but at a simplistic level, it has its greatest pull.

With a more robust educational system, I doubt that the fraction of people who fail to recognize its flaws would be high enough to really matter.

Liberalism has some pretty stringent prerequisites in order for it to work decently well. We haven't really been meeting them adequately.

The uneven distribution of wealth does provide some impetus for a change, but unlike Marxism which at least promises a change of the right nature, postmodern critical theory doesn't even do that.