The right question is this:
  • does those guys steal money from somebody? No
  • does those guys did any damage to somebody? No
  • does those guys killed somebody? No
So if there's no crime the case is closed.
As I always said, don't try to debate or argue with the gov or the justice system, because that will not end up you winning. They always win. Instead, rebut their authority. Show me the proof you have any authority over my money and how I use them. There's none. Case closed.
Also they have to admit that Bitcoin is money. Do those guys used dollars? Then the situation is different. if they used only BTC, then nobody have any authority over your BTC.