The KYC ask by casino sites shouldn't be an issue anymore in this 21 century because no slots and live games provider will operate outside the rules and regulations implemented by their Master license holder.
If casinos can avoid it they would and I don't know why people still find hard to understand this.
There is no issue if casinos, gambling sites wants to verify KYC of their user. But which gambling sites accept crypto which is non traceable and ask to verify identity then it would be self contradictory. I don't think anything else of it.