Sadness is a state of mind ,not identification of a person ( if it is christian or not ) even saints had their moments of sadness Jesus had his moments of sadness ,now this pope comes and tell people if they are sad they are not christian ,only a person that lives in denial can say that .
So this is Pope Francis' push-back against the increasing criticism of his deliberate destruction of The Church. One thing he got wrong. His critics aren't "sad". They're outraged and angry because they're living through what is undoubtedly the worst papacy in literally centuries, if not the entire history of The Church.