I think the internet should be 18+ no exceptions, its easy to enforce because you have to have physical devices and communications agreements (phone contract, isp to connect to). once a kid actually has internet access its harder to enforce age limits or police behavior problems and additionally severely reduces security for adults also for having to verify their age with sensitive information and documentation. This way if a parent really insists on their child using the internet (sort of like the parent giving their kids alcohol or drugs) we can put the responsibility for the consequences straight on the parents where it was supposed to be all the time.

literally no reason at all why a kid should have internet access.

Please note: this is a guideline. For parents. Not a law, there will be no DNS filtering or anything by the goverment or ISP:s, but parents of course may install whatever they want to the devices they give to their children.

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.

Maybe we will be able to get decent dumbphones again? All the ones being made now suck, as far as I can tell. OTOH it might be enough to use kiosk mode to lock down a smartphone to only have dumb functionality.

Good though it should be all the way up to 16 or 18

Banning computers for children looks anti human rights. You can always set ISP settings for a kid targeted device so they can't install anything outside a subset of software (most of them are propietary anyway) and with the DNS filters set to anything with porn/gambling and the like.