[WaxProlix]

It's a common cliché from rightwing circles (initially I think the combination of the two was produced by Jordan Peterson). Not to be too mean, but you'll see a lot of the Ben Shapiro fan crowd snagging on to it because it sounds smart despite being mostly meaningless. It's a placeholder for terms like 'degeneracy' and 'cultural bolshevism' and other such social forces that might undermine the status quo.

There's a bit more nuance if you want to try to take the term at face value. DDG renders this, which seems reasonable https://areomagazine.com/2022/04/11/is-postmodernism-neo-mar...