Ngl I feel that Obama and Bernie are really the only major democratic figures that actually wanted to talk to the youth (one with false promises and the other with tacit growth of some labor benefits that never actually came), the rest of the dem infrastructure is geared toward the belief that their aged moderate demographic will last forever or not continually show themselves to be right wing reactionaries.

tldr the dems hate the youth because the youth want actual material change that hurts the status qou