That leads to an interesting question. Sure this kid is what, 13? What happens when he is a young adult, 20 years old? You can't make an IQ test for allowing access to the internet, a license as it were.
Frankly speaking the only winning move is not to play. Or just to post cat pictures.
Though I have to say blaming the internet isn't entirely fair. I've seen real-life grooming take place and it's very insidious. It generally prays on the desire of naturally helpful nice people to be helpful and to disregard the true nature of the person/thing they're actually helping.
We don't need a new system to keep people who are a danger to themselves and others off the internet, we just need the caretakers who are already responsible for them to understand the importance of not neglecting the online activity of those under their care.
The fact it exposes them to 24/7 predatory behaviour is... well, it is 24/7 predatory behaviour.
The damage being done here is significant.
But yes, there do need to be some modern folk tales told to kids, something like The Brothers Grimm but featuring discord groomers and furry pedophiles instead of trolls and orks.