While I don't see it realistic in any way; Personally I would ban all social media on mobile devices (phones, pads) period. I would permit them only on full fledged laptops and desktops. Basicly putting the reset to the way things were in 2007.
literally no reason at all why a kid should have internet access.
When you go that extreme with it, you hurt every kid that is actually curious and using it in a non destructive way. I largely got into computer science due to the early iOS jailbreak scene that existed from around 2009 to ~2014. I got into Linux because the debian package management tools had been ported over to jailbroken ios. I think if you had stripped this stuff from me as a child I would have been on a path to mischief instead. I don't know when you got your entry into your hobbies/things you're passionate about, though remember that the story can look different for every generation and if you cut off access to information/knowledge from curious kids you may just set them on a completely wrong path.
Heck I think the MOST sensible way to go about things is to let the parents decide but no, apparently parents (in the US anyways) need to make the entire internet safe for you little snot nosed brats. I think your dad needed to take you out to the woodshed when you jailbroke your phone, I know I would have but I probably wouldn't have bought you one anyways, lest you turn into some sort of freakshow adolescent gooner with a room full of tissue paper sculptures of your animes or whatever you guys are into nowadays.