We must be grateful for Bp. Sanborn for clearing away the fog the SSPX and its deriviatives keep spewing out.
Indeed we must since he leaves us with a complete contradiction: the head of a non-Catholic sect (as he maintains) has received a designation to be Pope of the Catholic Church by men who likewise (he maintains) are members of the same non-Catholic sect. Therefore (he maintains) if Jorge Bergoglio converts he will become Pope...
But that is the same as saying the Dalai Lama has been designated to be the Pope by his fellow Tibetan Bhuddist monks and once he converts he too will be the Pope.
I agree and often use the same example. The sedeprivationist idea is so completely ridiculous when you consider that Bergoglio was a non Catholic at his election and the entire election is invalid. Accordingly, whether he converts will not make him a pope any more than if he does not convert, it will be a (valid) conclave that will decide.