The KYC is a norm now and the established casinos and exchanges will continue to ask for KYC whenever they need it but a new setup often uses terms like No-KYC to convince users that you're not going to be asked for KYC details even in future. But, they can change their policies anytime and no one can stop them or do anything against them.
I believe the KYC enabled casinos aren't bad at all because they're asking for KYC but surely one would prefer a non-KYC casino if he/she thinks a lot about his/her privacy.
Well said. I have noticed this particular trend too a long time ago. I used to feel delighted seeing so many no-KYC casinos, but not anymore due to all the reasons that you specifically mentioned.
The only proper no-KYC casinos are the decentralised ones which have their own set of issues like low liquidities etc.