NCR as  publication can and does question. But, and the big but is, that the  NCR has no authority or power beyond the act of questioning.   The 4 cardinals, because of their high church rank, have power and [posssible] authority to challenge, and according them,  forcibly require the pope to answer their questions.   NCR and its contributors  in questioning  teachings or documents seldom get much space in secular news reports, but news of the 4 cardinals trying to bully the pope by application of canon law has made front page news in many major newspapers.  What the cardinals have done is beyond just expressing their views.  They have threatened to use their rank, its power  and  canon law that they think gives them the power to do so, to force the pope to answer their questions or else.  The cardinals have gone beyond just expressing their views.