I’m not sure how I feel about this. Although I understand that player protection has only recently started to get to an acceptable position, I am pro self-accountability.
You decided to gamble. The casino didn’t make you. They may have influenced you, of course, but you could make that argument for any product or service. Given that gambling as a product, for the vast majority, is seen as a casual hobbie, and not a problem, I don’t think complaining because of retrospective responsibility is the right thing to do.