Ok, I'm not one to say I know the source to that reason. But I'm being for real here, from the pass year I've been going out to my job, I came across some people on the bus, in stores, etc, and said people generally look like teenagers. Nearly 80% of these teens that I see either to themselves or in a group of two to three, they literally look that OP's pic down to the hair color, to literally pic related. With glasses, literally puggy/fat, and quite literally look like a cunt in their face or a smug asshole if it's a guy. Yes even some of these people were guys, but mostly girls.
They are real, and for some reason look just like the "meme" proclaims. Either they are in on it like some nu-Emo era of cult fallowing or they are un-self aware about this to the point of irony.