usually gambling sites don't require KYC is a natural thing, but if it's the website you mentioned it seems like some people say this is a scam. I don't have a referral for it because I'm new to the casino, if you ever put money there you should leave it because it will be difficult to get money that has been cheated.
A centralized entity claiming to "never" require KYC should be taken with doubt, cynicism, and distrust. Because in actuality, centralized entities/casinos, if they are legitimate, have already accepted the trade-offs that they do indeed should require KYC on their users to comply with anti-money laundering laws. No service can go around it, except if they build their casinos on top of the Bitcoin blockchain like DirectBet did.