kids will just skips that casino and move to another.
if they don't wanna submit IDs, they can still go into BTC casinos that doesn't ask. they just every here in bitcointalk.
Lol. Most kids don't even know what crypto actually is and they would probably stick to FIAT since crypto can be complicated for many of them. Taking their parents credit card and signing up on a FIAT based casino is way easier for them. This new KYC rule is a positive step forward in my opinion.