Web 3.0 until now still i don't know what is that.
The main point in Web 3.0 is decentralization. So if casino doing KYC, that is like wrong idea. Casino will know our identity.
But on other perspective, i think really hard to make casino without doing KYC.
People will be easy come to gamble and go out... casino don't have any database customer to make them come again.
You don't need to think more about Web 3.0 and it's better to play gambling as usual.
Even though Web 3.0 will be decentralized, if the government wants to put pressure on the casinos, maybe they will still require KYC for their members because we know how much influence and power the government has in this matter.
With the demand for KYC from several casinos, we might experience it too in the future especially if KYC is implemented for all casinos.
But if casinos can really run their business without asking for KYC, it will be a real boon for their members.