The ratings tell the teens which ones are “the good ones”.
If a parent determines their kid is mature enough to play it, they will buy for them it regardless. And if a parent does not pay attention to what their kid does, THAT is a problem no law will solve.
When people start holding parents responsible for what they do as parents, the ‘kid’ problem will largely be addressed and solved right along with it.
I played all sorts of these type games with my daughter as she grew up. And she grew up able to distinguish fantasy from reality because of it. People should give it a ‘shot’. It solves a few problems simultaneously.