The causes are up for debate. And it is really not good to blame just one thing. It's many things. But the conspiracy part of me really wonders if this whole technology push all the time is part of a scheme to make young men more docile. I'm out there walking streams fishing and I never see young men. It's mostly guys over 40, if I see anyone. Same with hunting when walking the fields, mostly guys over 40. When I was in high school and college every job I had was outdoors and physical. Too many of these young guys run away from that it seems to play video games. It's not a healthy world because young guys need that physical element.
Another thing is faith. We desperately need to as a society come back to God. One of the important components of Christianity is the idea of serving, not being so focused on self. I think that is a big problem for young people with all the social media. And I'm not judging, because if I came of age in this era I'd probably be the same way.
Of course there is yet another consideration. Maybe I'm just old.