I think Cloudbet are licensed anyway, you can see it at the bottom of their homepage. I think they're licensed in Curacao? This probably means that they need to follow the requirements of the regulator which means including KYC in their process.
I would always choose a casino that performs KYC anyway, it means they don't cheat their players
So the cryptocurrency was created to be anonymous. Especially anonymity is necessary for the casino so that no one knows about your winnings.