Agreed, OP's post was reductive and sensationalist, to the point that it contributes to the problems it critiques. Our nature as people hasn't changed much, the internet just prevents much of the curation of voices that occurred before it existed.

It's not reasonably possible to rid ourselves of the internet, and in fact I think it's a net Good. The issue going forward is to consider and teach responsible internet use for not just young people, but everyone. Most of the shitty, intentionally hurtful things I see on the internet don't come from young folks, but from adults trying to inflict harm. People like that have always existed, and are the real problem in these cases.