"Doubtful pope." Ok. But God gives them to us as popes for a reason.
We are being tried, people. The wheat is being separated from the chaff before burning.
So, yes, no crap, Sherlock, that "we are being tried". You're acting as if you've come up with something profound here. We all know this. And, sadly, part of the trial has to do with whether or not people still believe in the Church and the Papacy, and the indefectibility of the Church, and many Trads are failing that particular test.
As for the first sentence above ...

"Doubtful pope" Ok. But God gives them to us as popes for a reason.
Give has given them to us as DOUBTFUL popes for a reason. You immediately beg the very question that the "Doubtful pope" position calls into question, i.e whether these actually are popes or not. That's part of the sifting, you see. You have to apply your "sensus Catholicus" and your faith to SEE that these men that appear to be pope, i.e. have the accidents of popes, are not actually popes, i.e. do not have the substance of popes. That's why God also gave us the Blessed Sacrament, with Our Lord being hidden under the accidents of bread, since we need to exercise our faith to discern that despite the apperances, the substance is altogether different.
If you can't figure this out, then you are failing said the very trial you so astutely point out to us. With each day that passes, you sound more and more like Stubborn where because there's a guy walking around in a white cassock in Rome, this proves that we have a pope.