The idea is far from comforting that bitcoins have sustained a major drop in value without an explanation that everyone can agree on.
To be fair, I don't recall there being consensus on the reason for the major rise in value last year either.
... Federal Reserve economist Francois Velde has described as a currency "based on an extremely complex code understood by only a few...without accountability, arbitration or recourse."
Are you sure he was talking about Bitcoin? Sounds like AML regulations to me.