Not gonna lie, Mixer is very helpful to me ever since I join the casino signature campaign and earn some Bitcoin because the local exchange the I use frequently to received this funds is very suspicious and doesn’t allowed deposits from casino or from any wallet that has a connection to a crypto casino transaction.
I encounter an issue in the past about this that makes me more cautious and embrace the use of mixer to hide the trace of gambling activity to my Bitcoin. I stop using mixer after the multiple seize on popular mixer and decided to use P2P exchange instead.
Bitcoin Q&A: Blacklists, Taint, and Wallet FingerprintingAndreas M. Antonopoulos talked about basic steps from centralized platforms to detect tainted coins and understand about it can help you to avoid problems with exchanges and casinos from your deposits. You can do it by yourself and don't have to use mixers for it.
I understand your concern because casinos with licenses have obey to regulations and one of them is AML. Exchanges can have problems from DOJI like Binance, Kucoin with accusations and charges from DOJI recent months.