And if you don't want to do KYC, you can look for other casinos that don't implement KYC. Maybe it's a misunderstanding of people in interpreting web 3.0 or is it to attract more users and say that their casino is a decentralized casino or is it just a new trend in the gambling business.
Most such casinos if at all will only make an attempt to sell to you the web 3.0 usage by asking you to connect your wallet like your Metamask or Trust wallet in order to play directly without having to deposit and even this I have not seen it implemented yet in casinos that they are claiming to be 3.0 complaint.
Regarding the KYC as said here it is better to know that the reputable ones we know already will not ask it for non relevant amounts but be prepared to provide not only identity documents but also proof of income/source of income in order for you to not have problems withdrawing huge amounts if you happen to win them.