I don't get the impression from talking to older folk that there's as much ADHD going around. You could argue this could be just due to awareness and older folk not getting diagnosed for it, but I think I'm pretty good at sussing out people with ADHD and similar disorders, and it's definitely mostly people my age I've noticed having it, at the very least my generation has more obvious and serious symptoms of it.
I love tech, screens and all that jazz, but I think it has a massive impact on the young brain in a way we haven't really fully studied yet, and even I'm fearing for my 4 year old nephews and their malleable brains, considering they've got access to the same type of tech I've been obsessed with, just at a younger age than me.