Sell While You Can
Bitcoin is doomed. Those comments would be the first major shot across the bow, ponzi scheme would be the next (first crypto grinders get money for free, late comers pay the price) and a straight up history of criminal activity. That it comes from the opposition leader in Australia, is definitely a five eye feeler for a rest of the block push.
Can they kill crypto currency overnight, absolutely, and this would be a major sign that they working up to it. Next up will be talk about foreign governments using it for secret espionage payments.