So the question is, does using a mixer put us at risk when dealing with casinos? Are we better off keeping privacy tools away from gambling wallets, or should we expect casinos to respect privacy since this is crypto in the first place?
Mixers are often associated with illicit activities, so to prevent your account from being flagged by casinos, it's advisable to keep funds allocated for casinos separate from those intended for use with mixers until authorities recognize them as a legitimate privacy tool rather than a money laundering tool.
Casinos make it clear that they are not a money laundering platform nor an extension of money laundering tools, so if they trace your coins coming from mixers, you risk getting your funds frozen and confiscated.