If Bergoglio were to wake up tomorrow and say, "I'm becoming a Buddhist.", according to you, this is still not manifest but "secret" and he remains pope until a General Council can convene to render a "discretionary judgment". That's just nonsensical.
It's nonsensical to have a PROCESS? It's nonsensical to wait for the CHURCH to decide such a grave matter? Your logic leads to chaos...
What's nonsensical is your implication that anyone can judge the pope what they consider to be 'manifest' heresy. There's absolutely no historical precendent for ANY of the laity to judge the pope in this area. Not even close.
A man that is a heretic, after the first and second admonition, avoid: 11Knowing that he, that is such an one, is subverted, and sinneth, being condemned by his own judgment.Who can admonish the pope, but Church officials?
Secondly, have you admonished him personally? If not, then you cannot say his heresy is manifest.