I have no idea where this idea that Internet is toxic to children is coming from. Is that some type of moral panic? Weren't most of you guys children/adolescents during the 2000's?
The problem with social media isn't the inherent mixing of children and technology, as if web browsers and phones have some action-at-a-distance force that undermines society; it's the 20 years or so they spent weaponizing their products into an infinite Skinner box. Duck walk Zuckerburg.
This is all assuming good faith interest in "the children," which we cannot assume when what government will gain from this is a total, global surveillance state.