You're getting some mild heat in sibling comments here. Jonathan Haidt's book The Anxious Generation goes into a lot of detail on this exact point about parental responsibility.

There are others that touch on personal vs. societal responsibility too and the difficulties with parental/personal moderation and change (Stolen Focus by Johann Hari and Dopamine Nation by Anna Lembke off the top of my head).

There is an enormous amount of nuance that goes into answering your questions and addressing your assumptions that HN is probably not a great medium for, if you're serious about understanding the answers.