> When will it be normalized to be able to say "Parents should just be doing their job"

you can say this, but it is not enforced, so this part of discussion is not really productive.

The UK/US haven't even spent widely on internet addiction education or built widescale programs like they did for drugs or even speech therapy. Jumping immediately to banning and gatekeeping everything on the internet is silly and naive. The world won't be a better place because we fear other kids parenting skills, it will be highly locked down and these ID checks/bans will hit every part of the internet.