The state can't control those things, it can control putting an age restriction on certain websites. Unless you are advocating for the complete abolition of all age restrictions throughout society.
You can let your kid play in traffic. You can let your kid run around with knives. Sure, but when shit hits the fan you'll be luck to pay a hefty fine and lose all social credibility you had. In the worst case you're looking at jail time. Those sort of incentives will tend to smooth these issues out.
I'm glad we're discussing parental liability. It seems no one else is advocating for "social media access is criminal neglect," so I appreciate the novelty.
The current strategy of yelling "parent's should parent" does nothing to influence any sort of result. It's simply ineffective and makes people who say it look like slogan slingers rather than cooperating in any meaningful change.
This is probably the most interesting angle of discussion I’ve seen in the past few days on this topic.
In, say, about a decade this tech bullshit will be regarded as the relentless toxic insanity that it was and we'll be better for it. Social tech CEOs will be lucky to evade prison if I had my way.