Some casinos would gladly accept offering non-KYC services. But they are forced to ask for identification because of government regulations. The government sees the casinos as a channel for money laundering and terrorist financing. Casinos also asked for KYC to avoid cheating and misuse of bonuses and other privileges. I doubt if there are any registered or licensed non-KYC casinos available in my location. Any gambler who wants to have a hassle-free gambling experience should just be ready for KYC.
Many casino have tos of service about non KYC if your account dominance loss than win, regulation suddenly change if you got jackpot and huge amount of winning for withdrawing all. If keep continue to play without withdraw maybe not problem your account still non KYC but if want withdraw all winning fund from usually withdrawal instant will process manual until have upload document ID. Its risk if any casino restrict user from specific country will difficult for withdrawing their fund.
I agree your ideas who ever the gamble indeed the ToS gambling site allow for non KYC but must ready for verifying document ID, read detail all regulation of casino are your country restrict or not if some time asking for KYC.