Perhaps I agree with you that Monero is great for using in anonymous payments. About a real casino with the possibility of paying in Monero would be in demand by those players who want complete anonymity.
But I was talking here about the fact that any of us already have a huge chain of messages and marks on the Internet that will never allow you to hide your identity absolutely 100%. These traces on the Internet can be quite simply tracked not even by special services, but by individual users who are well acquainted with searching the Internet.
I only wonder why many recent casinos didn't bother to add this wonderful coin? And even some popular sites like stake and primedice, we cant also see monero coin on them? What could be the reason for that? HHmm.. but the player seems to not care on it anymore but many players are used to using bitcoin and other altcoins.
Most of the sites including the two that I mentioned earlier still didn't mandate kyc's anyway so their privacy is still safe somehow as they are still being asked by an email address. About tracking things yes, I remember there is a site that works like a time machine where it can recover pages and other information that are already deleted on the web, it's so cool.