The trial is over. They jurors have been, I assume, discharged and probably just want to get back to their regular lives. They aren't professional speakers. The chance that one or more of them will accidentally say more than they should when quizzed the media is more than likely regardless of what instructions the judge now gives them. In fact, now that the trial is over, does the judge really have any right or power to provide any instructions at all to the former jurors?  This is a bad precedent.