Major-specific classes (at least for engineering) didn’t have time for any sort of indoctrination and non-major classes were jokes that you put as little effort into as possible in order to focus on the major courses.
How much this applies to you pretty much relies on two things. 1. Where you went to school and 2. What your major was.
I went to an engineering focused school and in my major classes most if not all of the profs had a neutral POV on these kinds of issues, and the class content was pretty much only CS stuff.
Some non-major classes, particularly in the humanities like COM had this kind of focus where the prof/grad student had a liking to modern progressive topic and would bring them into the class one way or another. (Think sex vs gender, toxic masculinity etc in a COM class.) Generally speaking these would be filler classes taught by grad students/younger profs.
Outside in extra curricular like clubs and fraternities DNI stuff mostly comes up in the context of some activity the university wants you to do to show you're not racist or will engage in sexual assault. I got the vibe that it was more of a BS metric for insurance or marketing an not actually meant to do anything.
(There's a whole cottage industry of speakers who get paid way too much money for giving these trainings I should write a blog post about one day. ;)
I had friends who went to a small liberal arts college where this was much more common, both in class and culturally. The students there were less HR DNI type stuff and more the "woke" side of things. Most if not all people there are true believers.
Overall for students + faculty it's a cultural thing, where you go to school more or less determines the level and type of politics that come into your classes. For University admins it's an HR checkbox, similar to corporate diversity training. In more left leaning disciplines it's usually populated by true believers.
This of course all starts to break down at the language level itself. Complexity simply refuses to be wrangled.
When I hear the woke talk about "cultural appropriation", "colonialism","white privilege", etc., it all sounds very familiar. Only now cultural criticism turned into full-blown cultural indoctrination.