Since it is so harmful to let children use social media, why aren't parents being put in prison for abuse and neglect when they let their children use social media? Why should everyone else have to suffer when it's parents that should be punished?
(it's because it's not about protecting children)
Because this is a golden opportunity erode privacy riots under a complete guise of "protecting the children." Same goes for "preventing terrorism" and various other attempts to appeal to authority.