Business Insider:

"[The crisis] has shown that one of the central principles advocated by Western central bankers- the desirability of central bank independence-was questionable at best…In the crisis, countries with less independent central banks-China, India, and Brazil-did far, far better than countries with more independent central banks, Europe and the United States. There is no such thing as truly independent institutions. All public institutions are accountable, and the only question is to whom.”
The problem with central banks is not so much their increased independence but how they more and more serve the interests of commercial banks rather than the public or the economy.
He believes that in the run-up to the financial crisis, the Federal Reserve was accountable only to Wall Street, and singles out New York Fed President William Dudley for some especially harsh criticism. He claims Dudley was "a model of bad governance" because of his inherent conflict of interest: he bailed out the very banks he was supposed to regulate – the very same banks that enabled him to gain his position.