Fuck if I can remember what I put back then, but it sure as shit wasn't below 18 because I've never had an issue before. This is a very recent thing. And I'd be very surprised if it's not a gross violation of the GDPR.
When (IF) I ever buy something in jewgles app store, my creditcard info becomes relevant to them and not a fucking second before.
Heck, we even got a state issued online ID thing in my country, you use for online banking/interacting with the gubmint/verifying that you're 18+/etc. They can implement that or fuck off.