This is a false impression that could distort public debate, by attributing to central banks responsibilities and tasks that are beyond their remit. Central bankers should be well-versed in their tools, but should also know their limits.
Since the Second World War, European integration has been a co-operative effort in which common objectives in principle override the size and power of the individual participants. The European System of Central Banks is a both a product and a reflection of this European Community of Member States.