Avira > take a look at the kind of young people who are working/going to college and not yeshiva under 25. they’re people you would agree are not very religious, by and large.
this is a good question. Are you looking at whole Jewish campus population? Then, yes. But it is not campus that made them less religious. The question is about observant people who go to college. I know quite a number who are observant, some are learning while in college, going to campus or community shuls. I did not meet people who came to campus and stop being observant because they heard something from the lecturers, although maybe I am just not in places where I could meet such. When I was in college some time ago, the campus Rav was of the opinion that kids are of certain condition before they come to campus, some are ready to go off-the derech and just waiting to get out of the house (he was dealing mostly with MO). Maybe you mean that in certain communities, the learners are respected and those who do not succeed go to college and thus are already vulnerable.
again, my experience is biased to mostly seeing college-educated observant people, and not those who go there and do not come out well. What is your experience? I presume you see more of the input into the system.