Agree with some of what you say, but it really depends on the school, the demographic it serves & the type of institution. In my career I worked a lot of cooperative projects in R/D with universities across the country. Never had a problem and never saw any of the instances that people (me too!) here rant about.
I retired to a university town in a very blue collar state.
Yes there are leftist loonies here but you have to go out of your way to find them. In fact I am told (And have met one example here!) that the political science department here is conservative. (The prof I met was a retired Navy officer Vietnam vet.) From what of the students I can see & have met the vast vast majority are here to get a degree and then get a job and that’s pretty much it. (Well scream & support the football & basket ball teams!) The biggest gripe I get from the students (all STEM in this case!) is way too many foreign STEM profs & foreign STEM grad students. (It was easily 50% foreign STEM grad students when I was here for my PhD. 30 years ago!). Probably 1% of the students & faculty create 90% of the visual & verbal political turmoil that people complain about.
I can only speak to what I see on a daily basis.
From the sixties to date we have a not so slow trend to socialism that is being taught in our schools. From grade one to college the indoctrination is complete.
Maybe in the STEM areas of education there is a trace of specific learning but too few are taking that path.