The financial markets are sophisticated in this area and I would claim, that whatever their posturing, they are rarely misled. Communication is an area where the ECB is often faulted by the media and the markets. This being the case, we should take it seriously, of course. But perhaps the critics are both right and wrong.
It is not helpful if the public and the markets are confused by what they perceive as possibly contradictory statements about the intents and reasoning in monetary policy, or if the information is too scant to allow the public to make an assessment of the policy. This is an area in which the ECB probably can and should improve.