This part takes the least to claim the worst isn’t here. Akin to saying Al Capone was “just doing dishes” when he was arrested, why would you.

There are various illegal parts: Creating a currency for example. But even if one can walk around the definition of a currency, exchanging it for dollars is most probably questionable: You give banknotes to someone in exchange for a token which you don’t know how it was obtained. In most cases, it is facilitating drug exchange and hitmen, so, unless one can prove where a Bitcoin comes from, I’m surprised it is even legal to exchange it for tender money.

The whole thing should have been sued from the start.