The social media ban has little or nothing to do with children & everything to do with regulating adults using social media. The progressive establishment is driven mad by social media because they usual tactics of Gramscian control of public institutions no longer works.
I don't have strong feelings on a social media ban for da yoof, but if it does go through, that seems like a strong tacit concession to the idea that it is unreasonable to expect parents to manage their own children's device use. Another small blow to authoritative parenting.