I don't think you should concern yourself if you're working with reputable mixers anyway. The ones that get flagged and banned by Central Exchanges are those found to be working or used to facilitate illegal operations. Sinbad was one of them and if I'm not mistaken prior to them being banned by the US government they also received some flags from certain exchanges as well. Using mixers wouldn't really subject you to any criminal liability unless you're found to be one of those that used it to steal money from users to which you'll of course be receiving some lawsuits and a possible arrest, but if you're just an average joe concerned about the safety of your funds so you used a mixer to protect your identity against these hackers then you shouldn't worry about it. Just as I said earlier, make sure you work with a reputable and trusted mixer, and you're good to go. The ban on mixers in this forum if it concerns you is just to avoid further issues with these guys. The thing has spiraled out of control after chipmixer and sinbad got seized that the forum couldn't afford to just sit back and wait until they get the blame.