Many gamblers avoid KYC because it means they have to send details about them and it becomes very risky for them after they send the data.
That's why gamblers who use crypto always look for gambling sites that don't implement KYC or even if gambling sites ask for KYC from their members, the rules will not be too strict so gamblers can still hide other data.
Many members have shared gambling sites that do not use KYC, but gambling sites can still do KYC because they are in full control of their site.
The most disturbing thing about KYC is that it is used in the internet environment. The people with whom you share your credentials are sharing this information with whom and in which environments you have no chance to know this. This is also the case with exchanges. Even if you have a small amount of investment, they can cause a lot of trouble when you need to get it through KYC.