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You will always be asked KYC by Casino.
Almost 99% of Casino can ask KYC, never trust anything for Centralized Casino even they're mention anonymous feature. If you want gambling without "KYC" you should pick On-Chain Betting, all of your win by smartcontract.
We've been into centralized casinos and I think that's all due to easier means of gambling with them.
But I agree with your suggestion, I may try to get into those onchain betting soon. What do you suggest for being onto this type of betting and what platform do you think shines the most?