Sadly, you are correct. It seems a lot of them have zero clue about history or sacrifice and a lot of them have zero desire to learn it. Sacrifice to them is their cell phone going dead and not being near a charger. Not THAT is rough.
Furthermore, Deplorable 18-29 year-olds in 2018 were smart enough to hang up etc when some random stranger asked them for their political views while their statist brethren can't keep their big fat narcissistic yappers shut, thus forcing an unbalanced sampling of that age group. I bet if that silent lot was included, the trend would be flat.
My encounters with that age bracket aren't as depressing as the MSM want you to believe. Yes, there are stupid ones. But there are a great number of really smart, driven kids who don't hate America. Even the centrists I've met just want to get on with their life and career. These youngsters often have side gigs in addition to their main gig, are laser-focused in what they want, and are a little stressed. That's not the image the MSM wants you to have - they'd prefer for you to think the West is lost.