If you don't like it don't accept their labor.
If you stiff, your doing something roughly as immoral as stealing.
Invent any story you want to cover it up. You think workers should be paid more and instead of tips the service shoud cost more, or whatever bs you want to spin. You know you're full of crap.
I dislike when people never tip or leave really crappy tips. What I dislike even more is when people tell others how much and when they should tip.
I don't see how the casino is off the hook.
The casino says - if the customer doesn't make up your wage difference for any reason, not our problem.
The customer says - if the casino doesn't make up your wage difference for any reason, not my problem.
But if you have some subjective reaction that makes you dislike it you can choose not to participate. Expecting people to work for free because of some nonsense rattling around inside your head is extremely arrogant and not far removed from stealing.
They work for tips. Knowing this, you accepted their work. So tip, or you have taken something without paying for it.