The Pastoral needs of the faithful were served by abandoning the views that Jews were Christ killers, that separation of Church and state was only necessary in mixed societies and not  all of them and that all non-Catholics were going to Hell.  Actually, these sounds like doctrinal statements to me and they certainly override the offhand comment of the idiot Pope Pius IX that error has no rights.  Individuals have rights.  All of them.  Not just Catholics.  Further, his comments came from  extreme hubris.  Such triumphalism should be a thing of the past. It is better to have dialogue and seek truth than to use authority to foreclose progress (or to undo the Church's vincible ignorance of biology and sexuality - often for selfish reasons which have nothing to do with the glory of God).