Identarian dogma is concentrated in particular institutions and programs. But it is a thing, and it's growing in influence.
https://heterodoxacademy.org/the-problem/
The issue isn't that 70 per cent of students are radicals calling for overturning the neo-colonial patriarchy. The issue is that the 10-15 per cent of students and faculty who do hold those beliefs hold them very, very strongly, and university administrations are so terrified of being branded as racist, sexist institutions of patriarchal oppression that they accede to demands made by what are relatively small numbers of activists.
Furthermore, academics and administrators are so politically homogenous today, that even the moderates who don't agree with radicals won't stick their necks over the ramparts because they don't want to slurred as bigots, neocons, or the alt-right. If you're a moderate centrist who disagrees with campus radicalism and speaks up, you'll be denounced as an alt-right bigot by your fellow professors, let alone the radicals themselves. So why take the risk?