I doubt lack of social space has anything to do with it. As a kid I would hang out at a literal dump with friends; what else were we going to do? It’s just too easy to waste an afternoon on TikTok.
I agree. Kids make the best of what's available. And in some ways they are still doing so, in this more digital age. In ways we older gens couldn't. But there's no denying that the elephant in the room is the massively pervasive, universal social and information connection that is cellphones and internet. Even we older gens have been subsumed to a fair degree - we're here right now! :)