You are indeed right. Anonymity does not somehow a big issue at the moment since most of the casinos are actually requiring KYC most especially for big time players. Although there might be some few gambling casinos who are not into KYC verification, but I believe their system will definitely be updated and will require KYC sooner because that’s what the government requires them to do so.
However, there’s still some factors that we still become anonymous from others, but not from the casinos personal staffs. Maybe let’s just accept the reality that KYC will be compulsory in all centralized casinos all over the world. This is not only made out from the government wanting to control everything, but also for the sake of gamblers security and protection.
That's the sad reality as we push the government regulations, we are being forced to follow the KYC rules. Most of the casinos now are asking for KYC, but some are still not and they will only ask for KYC if they see some irregularities with your account. Somehow, KYC is indeed for the security purposes of both parties, let's just hope that secure our data with a highest priority or else, hackers might get our details.
One should always do some basic research before joining a platform. If a platform is asking for KYC at the initial stage of your journey with them before making any deposits or withdrawals, you need to make sure that the platform is trusted and has a good reputation among gamblers in the community, upon finding out that it is trusted and reputable, you should go ahead and complete the verification, but if it's the other way around, you better keep looking.
This basic research will save you from platforms that are not trusted and they might take your personal information and sell them to other companies or people for money, and those people will obviously not use your information for doing good things, so it's always important to use only trusted platforms.