A casino platform must control an economy and have a regulatory system that can never be decentralized. Some casino sites claim to be anonymus casino but they do it only to attract users. You can read the Tos of those sites and see that they have some rules about kyc right there. But they are only using in their title they are decentralized and they are anonymous casino site where you can gamble for any amount without submitting your identity document. So always read ToS clearly
They're not really an anonymous casino since their TOS clearly states KYC. But sometimes, casinos use that as a marketing tactic to attract more gamblers and stand out from the competition. I’m sure many gamblers are aware of this, and these days, KYC has become pretty standard. However, if a casino isn’t strict in enforcing it, that definitely makes it more appealing.