A question from a noob... I'm not suggesting tumblers are used 100% of the time for illicit purposes, but I don't think there can much argument that they do facilitate a significant portion of such transactions; therefore, it is fairly likely that the coins received back from the alpha pool originate from potentially tainted sources. The origin of such tainted coins obviously wouldn't relate directly back to the customer (aside from the fact they were in final receipt of the funds) but they could potentially be subject to scrutiny in certain instances (audits / investigations relating to criminal activities identified and traced by government institutions using blockchain analysis tools such as chainalysis). Or am I being overly paranoid?