The main reason why cryptocurrencies had become so popular it is just because of its anonymous aspect on which you can really be able to be cheated any moment. Even if you still believe in "anonymous aspect".
There are some gamblers who really want to be anonymous, they choose casino without KYC, but the main part of gamblers, who tell us about anonymity share their private data with any service without any doubts. Be honest with yourself, analyze how much services have your data and add one more - your favorite casino.
The thing is, some people think that it's only when they give out their personal information on casino sites that their details can be sold out to scammers. They fail to realize that even some of those sites that they trusted with their details can also sell their details to scammers. Sometimes, when some people create social media accounts like Facebook or Twitter, they give out their phone number and email address, and there are some scammers who have some machines where they can just input your phone number and get every other personal detail they want.