I can see the argument of parents or guardians ensuring the device is properly set for their child, but I feel like age is not the right information to use. But I agree, it's definitely not well thought out.

I feel like if we assume this is in good faith, and they want to make sure adults can ensure minors don't have access to certain content, why would they use age as the information? This can be solved, or even have been solved by having Parental Control feature like in IOS which provides finer options than what you would get with age.

This could OK if this was requiring that any device or operating system have access to parental control in any capacity (either by default or via third party application) and limited for things that would be used by minors so that VMs or other stuff don't have to worry about this. Or, they could mandate products to indicate that the feature exist. That way, a parent can decide what to give their child.