It's o.k. to vote for a pro choice candidate only if -- in your judgment guided by a correctly formed conscience -- the other candidate supports something much worse. Satanic human sacrifice? Lynching? Nuclear holocaust? Dunno. But it would have to be bad, almost unimaginably bad. Which is why MD put in that word "theoretically".
Perhaps you're reading the letter from your bishop wrong.
But that's all beside the way and really a rabbit trail that hasn't very much to do with the main points under discussion.
Which are - I think, I may have lost track - are the ideas set forward by this disobedient and about-to-be-excommunicated priest (1) consistent with the teachings of the Church; or, secondarily, (2) good or bad in themselves? And, finally, can somebody support this priest's ideas and the related constellation of liberal positions and remain a faithful Catholic?