At UChicago and elsewhere, people won’t (and shouldn’t) take broad generalizations like this seriously. I recently passed through the Cambridge area and I didn’t see students embarrassing themselves left, right, and center. Nothing leads me to believe things are any different at Yale or other schools.
On the other hand, maybe you read this press account of protesters at Chicago trying to occupy an admin building and bringing a list of demands? Every school has a small, vocal, and sometimes-vociferous minority supporting or opposing any issue you care to name.
http://www.nytimes.com/2016/06/09/us/university-of-chicago-protests-tyler-kissinger.html
I suspect many people seem PC when you bandy about words like “dippy” and “moronic.”