There is a risk level associated with any money withdrawn from a casino because it can be coming from a source that has been flagged. Any casino not requiring any form of KYC will be a tool for criminals to launder money, which means that it will not be impossible for you to receive money from a casino that is from a flagged source.
I know there is a risk of playing in unnamed unregulated casinos. But people who care about their privacy do not really like casinos with KYC requirements. As you may know, some regulated platforms allow players to play without doing the KYC till some point. For example, if your transaction limit does not reach a thousand dollars, you are ok to play with basic KYC which does not require you to reveal your identity. These types of casinos are the final destination for people who care about their privacy. But still, there are some risks. If they ever hit a big multiplier and then want to withdraw their big wins, they will have to complete the KYC or leave their winnings.