Exceptional points, 1LittleBear.  Thank you for them.
It occurred to me at evening prayer tonight that this entire discussion - engineered by radical conservatives such as David L - is unnecessary.  The argument is long over, the Church Council has spoken as have an overwhelming majority of bishops, theologians, abbots and the laity (and more) and the matter is closed.  Pope Francis simply states the apparent and those who cannot accept it (their loyalty to the Chair of Peter is shown to be conditional which makes them as much a "cafeteria Catholic" as anyone could be) create the same dissent we saw 50 years go.  How disingenuous!  So, what often seems like a discussion where learning can occur soon becomes clear for the repetition it really is: a small, struggling, angry and quite aged few who cling to the ash heap of history and avoid change in any area.  They bring no joy to anything they throw themselves in the middle of.  I have to remind myself to disengage from them sooner!