In my opinion, BTC is not a traditional currency like gold and silver because it does not have any use value, so it is not a credit currency. It's basically just one use, money laundering tool. The tool explains why bitcoin prices are spread across the country and abroad. Domestic money is changed into bitcoins and then physical transportation to overseas exchange for foreign currency escapes regulation and the cost of money laundering is lower than before, and the risk is low.
I do agree the point is bitcoin is not good for money laundry cause all record is immutable and could be use to track down the person who receive it. People should stop think bitcoin the best way to laundry money, i think people would rather use art as the way to laundry money.