You wrote that Callista Gingrich should be rejected because her public life is at odds with Church teaching. I replied that that is often reason for rejection, as in the case of Iribarne, but that in fact her public life is unexceptional.

I do not have a theory why the Vatican rejected Stefanini. However, I can't help noticing that the fact of his homosexuality seems to have been widely known. This suggests he was not living a chaste life and keeping his personal struggles with temptation to himself.