We all know that KYC is needed for gambling on most online casino,if any casino does not ask for KYC during registration,you should be careful with such casinos because at the end of the day,when you win big,you will be asked to provide KYC for them to give your access to withdraw your funds. We know that casinos can leak out our information to the government or other institution who seek for it because casinos are not to be trusted with our informations. This doesn't mean that we should stop gambling since most big and reputable casino must ask for KYC because they are operating under government regulations. I don't see anything wrong there for you to pick provide the required information to enable you have fun through gambling.
What I think is bad here is Because of the data Leaks , I don't like my data being Leaked , and I'm not a millionaire or anything like that, where it was and I'd like to bet , and I would go to the best casinos in the world, here they are, I have seen them I could leave my KYC, but that does not mean that my data is safe, because a hack to a casino and all that data is gone, and not only the The criminal will rob the Casino , he will steal the information of the players who bet more in a Casino, because it is known that if they bet more it is because they have more money, so this is a Security issue, it is not for Nothing , Security is Everything.