I think this is a factor. Kids coming out of universities often seem to have been indoctrinated or radicalised into a very anti-intellectual progressive/neomarxist ideology. And a lot more girls are going to university, so it makes sense that they would be more affected.
I think too this dovetails into the agreeability issue. One of the reasons young girls do better in school is they are more easily biddable, on average, than little boys, they try and do the right thing and please the teacher. So they do a little better all along and in fact that often builds up into girls really dominating in schools by the teen years. And then those girls go to university where they are also agreeable and biddable, and the boys that are going also seem to have a similar kind of personality.
The boys I see who are bright but more disagreeable, more inclined to want to fight the man or have revolutionary instincts, which at the moment end up directed against the, sort of progressive consensus among the school and social leaders in society; and also the girls with that personality type, aren't as often going off to university.
All of which means that we are seeing many more high achieving types of girls, very focused on marks and results and social approval, going to the place that seems focused on passing on this worldview.