No matter which jurisdiction you choose, sooner or later the cryptocurrency will be regulated in all countries and casinos will have to carry out KYC procedures for their clients, at least in the case of large winnings.
As long as there is a need for anonymous casinos, they will appear. Demand creates supply. And if there is a demand for anonymity and anonymous casinos, they will continue to appear.
If anonymity is needed, the administration of casinos and other crypto sites will come up with ways to ensure anonymity for their customers. One of these ways is to create casinos in jurisdictions that are loyal to cryptocurrencies or not register casinos at all.