@danirabbit there is a story of cultural theory I've had in my head since my early 20s, which I've been slowly evolving. We keep going people siloed into artificial groups of all one age bracket until they're 18, and often until their early 20s if they attend higher education. It's unnatural, and it's an artificial situation that they will never encounter again the rest of their lives.
As a result, because they are shut off away from their parent's culture they develop their own. Which is why every generation has their own music, fashion, and even language. It also makes parent's feel alienated from their kids and vice versa. Then these young people are thrust out into the real world, and they never experience such an environment again.
I had the misfortune of being labeled "gifted" while not getting the actual diagnosis that really applies (autistic). Instead of letting "gifted" kids move at their own accelerated pace we generally keep them in the same group with their "peers" because if we put them in with older kids they would feel alienated. That's the theory. Fuck, I was already alienated. Then I had to wait around and try to occupy my brain while the other kids caught up. That just made me feel even less party of the group. If the internet had been a thing back then it might have really helped my mental health.
I'm rambling a bit. I could do the subject s lot more justice long-form, and I've been thinking about doing just that when time permits. Suffice to say, I think a lot of society's ills stem from generational divide. Locking kids away from online life will absolutely make that worse.