Yes. Two questions are: did the BTC-e founder knew that he is helping to legalize proceeds for MtGox hack? Or some general hack? Or just he didn't make due diligence on the source of money and just agreed to help for a fee? And second — what authority the US government has in running the trial? Why the case is not tried in Japanese or Russian or Cyprus courts?
No. Because there never is any planning between the manufacturer and the bank robbers.
Remember: we are talking about money laundering operations here, not accidentally receiving stolen goods without knowing.
Can these use be abused? Yes. Very much. Should they still exist? Yes.