I hardly know what to say, since so much of what has been said sounds strange to me. At root, though, I wonder about the generalizations of who "today's" college students are and what "they" are like, and how they relate to let's say "yesterday's" college students. My memories of college in the dark ages don't quite match anything I have read here.
First of all, I don't remember any stories like the Harry Potter or Twilight series even existing, much less being read. I suspect they are famous nowadays, and justly popular, for being new departures in popular literature as well as for being interesting.
Second, on the alternate 'serious side,' Kerouac and others were just beginning to appear, but not with overwhelming popularity on campus as I recall. Some few students were politically active and engaged, and eventually gained their notoriety in campus disruptions, but they were not the norm either.
Third, at my college everyone was loaded down with book-reading to be done and written work to be prepared. Socializing was possible only in short time slices; the college scene, seen through my eyes, was definitely not "party time."
What does that all mean? It means I have the suspicion that comparisons of what college students are reading and have read, and who college students are and what they are like, is so highly variable as to make meaningful discussion almost impossible. Somewhat like the weather. What makes a nice day? There are many kinds.