Just because mixers claims to follow such and such protocol or if it promises one thing it does not mean they are honest. I think the days of online mixers will be over soon as all owner/operators will be worried about being arrested because it is impossible for mixers to stop their websites and business being used for money laundering.
After this fiasco, I wouldn't trust any of the crypto mixers out there. I wouldn't promote them in my signature space because you are probably going to get scammed when you need the only service they claim to provide, privacy. Why would I vouch for a service that's not going to honor its word when it is most needed? If the so called "best crypto mixer" out there can't accomplish it, what makes anyone think the other services will?