Casino has a KYC policy for AML if you are not aware. Casino has a legal defense mechanism which they actively caught money launderer while mixer services protects the customer privacy. I hope you knew what's the big difference on the issue that you point out.
Mixer doesn't screen if the transaction is from a launderer or not since their service is for privacy purposes. This is the grey area that they are talking about. Gambling on the other hand has a license to operate.
It is not for a casino or any other service, following the procedures of the law for its sector, which prevents it from being used for money laundering.
I'm not saying that they do, I'm just saying that it's a sector that is used a lot for that purpose. By the way, this happened long before the emergence of cryptocurrencies and mixing services.
Now I have nothing against casinos, even used some of them myself, but you'd be hard-pressed to find any platform, mixer or casino, that doesn't have black marks on it.
That's exactly what I'm saying.
If they say they don't want to get involved in the matter, because it is a service that, despite not being illegal, is in a gray area of the law, I understand. Now, it's not because it's a possible scam.