accepted post modernism so fundamentally that it's repeated and taught in almost every top ivy league school

So I went to the top ivy league school. First off, the majority of students at this school and other top schools do not necessarily encounter postmodernism in their studies. It may be "taught" in certain classes at any large school offering a wide range of topics to study, but it is not forced onto everyone or even the majority of students. I concentrated in molecular bio, for example, and could've avoided learning about postmodernism entirely had I not stumbled upon it in a very obscure elective I took outside of my concentration.

Secondly, postmodernism is not "taught", or brainwashed, into students. It's dissected and criticized. I encountered it in a negative context. I certainly wasn't indoctrinated by it. Learning about it provided context and a lens through which to view and criticize other topics. It did not persuade me to think in a "bias is good, I'm biased, bias is humanity, blabla" sort of way -- it did the opposite.

So I think you're sorely misguided if you think major universities are chock full of postmodernism indoctrination or evil leftist crackpot professors. I know certain fringe publications like to claim that these days, but it's just not true.