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.
Your way of thinking is very narrow. For example there is a car, and then the car is used by a villain, then whether the car only serves as the vehicle of a criminal?... of course not!, So it is with bitcoin.
I guess it all depends on the person itself how they treat bitcoin.
USD is the main currency that the criminal use for the money laundering. OP is for sure uneducated on this matter. Bitcoin like you quoted has a unique concept and in the right hands it can do wonders both for the market and for its holders; in the future also for the economy. I am aware that the Bitcoin is a new mean for the money laundering but aren't all currencies used for that? Bitcoin is just treated as the dangerous asset because of the education and fear of the certain opposers to it.
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Government is for sure defending their own currencies which have till now been laundered so many times which cannot be comparable to the Bitcoin. False news spread by the media is influencing the common man which is after that getting really suspicious towards cryptocurrencies but in the end, cryptocurrencies are depending on the final usage of the certain investors.
Not all people are criminals!