For the moment, Roobet is one of the only sites that you need to fill in some personal information when your register. But in the end, a lot of casinos require KYC when you want to withdraw some money (even small amounts). I have needed to complete a full KYC to withdraw 0.01 BTC.
As far as I know Stake requires filling up your personal information before depositing and withdrawing any fund. So Roobet is not the only one. It's strange though when crypto casinos are applying KYC to all their clients.