Having a Facebook account and verifying KYC on a platform isn't the same. Facebook doesn't verify your identity in the first place. Facebook won't know if you are using fake information to create an account. But, Once you create an account on a casino and you have to submit KYC. You cannot submit fake information to verify your account. On top of that, You cannot compare a facebook account with a KYC. Nobody on the internet knows if the account is real or not.