If you've watched Reddit in the last decade, you can see the massive explosion of social anxiety expressed by it's member base. Which is MOSTLY composed of late teen/early 20 somethings with a few old farts mixed in (old fart raises hand)
I'm always amazed by the admission of it's members and how SO MANY seem to suffer from crippling anxiety. I can't help but think it's a vicious cycle of chicken/egg syndrome where you can't say effectively WHICH came first, but you CAN say one causes the other.