Root of the problem
What this does is highlight the root cause of the problem:
That is that there is simply NO WAY WHAT SO EVER of reliable verify age or consent to use access/use a service/website on the Internet.
Parents make the problem far worse by allowing kids to have Facebook Instagram or other account in blatant breach of the age restrictions. What is truly bonkers is that this has been going on for years and no one has yet found a fool proof way to manage it. In a shop, if you go in and try to buy cigarettes, alcohol etc and are clearly under age, you can be refused unless you provide appropriate ID. It works because that ID has a photograph on it. Online, it simply is a non started. There is simply no way of verifying age, identity or consent reliably.