It's unclear to me from what you wrote, who is the hoaxer in this piece??? St. Malachy? Or Nostradamus?
One is a canonized saint. The other a prognosticator of future events.
I wonder what you mean (or imply) by saying that St. Malachy's prophecy "is almost certainly a forgery/hoax."
Does this put you in the Nostradamus camp???
BTW, what, exactly, was St. Malachy's prophecy? We know already what Nostradamus' was:
Last pope: Peter the Roman. (Whatever that signifies.)
Not trying to stir up trouble here, just trying to get on the same page with you.
Please understand, I am a very slow learner. So please be patient with me....