I don't know if 18 is the right age limit, but there has to be some limits. The problem is, many platforms, that are asking for age verification have only one click measure and the responsibility lies with those applying or registering, so ... it's like non existent actually. You click I am 18 and the platform than blaming you for cheating.

Parents are busy most of the times and many have no idea what their kids are doing most of the times.

It's a really delicate matter and hard to find a balance, but something must be done.