There is definitely an element of parental responsibility that often gets conveniently ignored in these debates. I'm a sceptic about placing the blame entirely

There is definitely an element of parental responsibility that often gets conveniently ignored in these debates. I'm a sceptic about placing the blame entirely there though, for the simple reason that so much of normal life is now connected. That includes time at school or when kids are playing with their friends and not under their parents' immediate supervision 24/7. The only way a parent could truly keep their child away from any possibility of getting online today would be to restrict their activities and access to technology so severely that they'd barely live a normal life or socialise and develop in a healthy way. So whatever we think of parents and how they raise their children, the problems that modern connected technologies create are always going to need societal solutions as well as parental or schooling ones.