Even the casino agreed with the data privacy one their data is leaks all of your information is now available in the internet and can't be deleted.
And until now, there has been no action from regulators regarding cases of customer data leaks, whether from hacking or intentional data breaches. That is what is regrettable at the moment.
Casinos comply with regulators to request KYC from customers, but there is no real guarantee regarding the security of the data that has been provided.
Gamblers aren't just providing their name and email address, but also copies of their passport, photo, bank statement and sometime even document proving their source of income. But I wouldn't agree that regulator do absolutely nothing when data breaches happen.
So, in my opinion, it's much more important to pay attention to a casino's reputation, how it store personal data, and who exactly receive document submitted for verification.