Do you think your casino can be regulated without the AML policy? The requirements says it's all, so is it possible that those casinos doing their no KYC stuffs are not even registered?
The KYC procedure is of great importance both for tracking the winnings of users from gambling and for tracking the customer portfolio. It is also very important to ensure the safety of users. Every legal casino is required to comply with this procedure and this proves the legality of the casinos that implement the procedure. This requires casino to comply with the procedure if it is legal.
The reason why I generally don't prefer casino services that don't comply with the KYC procedure is that I doubt their legality and they create problems in the perception of trust. Since it is mandatory to track users earnings and report them to the government, every casino must comply with this procedure. The fact that casino services that don't follow this procedure are likely to be illegal and my funds are at risk accordingly is definitely an important red point for me.
In summary, it is important to choose casino services that apply the KYC procedure as it proves that mandatory transactions have been implemented, such as user earnings can be tracked by the government, the real customer base can be determined and the legal obligation is fulfilled by the casino business. There is no difference between handing over your money to an illegal casino and handing over your money to someone you don't know.