You really don't know how the blockchain works, do you?
Troll is still enjoying the attention. Kick him out of the conversation and he will lose his interests.
The fact is that hard currency (aka physical dollars) are frequently used for illicit purposes. Unlike bitcoin moving through CM, or any other mixer, it is very difficult to track dollars, especially if they never end up in the banking system. When I receive dollars from someone, although I don't think the dollars are the proceeds of some illegal activity, I really have no way of verifying this. Also, unless a dollar I receive is brand new, or nearly brand new, there is a high probability it was used for some illicit purpose between the time it was printed and when I received it.
No one talks about all the illegal activities are done used by fiat currency. Bitcoin existed and black money talk started and all the crime started to happen. Isn't it? Before satoshi the world was a beautiful place without any war, drag dealing, money laundering, sex trafficking, humen trafficking, child abuse. My three years old baby girl may believe it if everyone around me keep her away from the history.