If cryptocurrency is still controlled by a central bank, in my opinion it cannot be called a decentralized coin. One decentralized coin is Bitcoin which is controlled by any authority including the central bank and I agree that in cryptocurrency, the central bank is pointless
Of course, that would be their initial reaction to cryptocurrencies. Us as well are having the same impression on how they perform, but regarding our feelings and opinion to their system, our's is much more reliable since we do really have our advantages to their system. Theirs's, on the other hand, is full of speculation and fear that cryptocurrencies might replace their duty to provide the people with decent and efficient financial service.