If you knowingly facilitate the commission of a crime you have to expect that you risk facing consequences as a result...
The key to this is that he allegedly knew that the coins were being used for illegal activities... It makes no difference if it's Bitcoins or Dollars, you can't knowingly break the law without risking your freedom.
It's no big surprise.
That's why all the voters in America are criminals. They constantly vote for crime-lords in Government offices, who don't obey their Oath of Office to uphold the Constitution.
We're getting our freedom taken away as a result. Things like Bitcoin happen to be extending our freedoms a bit, and for a time.
