Agreed. I wonder if (with all due respect to others here) if it would have honestly been too much to expect a big en masse vote for Trump among youth. My feeling (correct me if I am wrong) is many of them staying home or voting Green probably harms the Democrats more than it does Republicans.
“...too much to expect a big en masse vote for Trump among youth. ... staying home...”
See my post #7; our experience with my daughter and the general direction that the “groupthink” at her campus is leaning with them (almost adamantly) choosing to not vote, basically supports your premise.
This will hurt Hillary Rotten - those “oversampling” of Dem polls are reflecting that this age cohort will turn out for her and they are not going to do so.