I don't know if I was direct enough -- the point is that ultimately St. Catherine and St. Vincent Ferrer ended up on the same side of the schism. If St. Catherine were alive today and sedevacantist, and St. Vincent Ferrer were SSPX, this means he would have eventually come around to sedevacantism and renounced his former position.
Besides, the difficulty of our time is actually more brutal and obvious than theirs. The Great Western Schism was begun by Cardinals who said they were coerced by fear into electing an Italian Pope, after the exile of the papacy to Avignon. How were the people supposed to know the details of a papal conclave?
In our time, we clearly see that Paul VI-Ratzinger are heretics -- John XXIII may have never directly taught heresy -- whose heretical acts are almost daily. Moreover we can see from their Encyclicals that through their attempts to have "dialogues" with other religions instead of trying to convert them, they attempt to "reconcile Christ and Belial," and are therefore all of one Modernist mind and have already been roundly condemned by Pope St. Pius X.
The only thing keeping people attached to the conciliar structures is fear of saying that the man playing the part of Pope is not the Pope. What if we're wrong? Then we're going to hell -- that is their fear. And when you see a BILLION people still in the Novus Ordo, your fear is compounded, you think "This many people can't be wrong."
Well, to quote Apocalypse 13:7,
And it was given unto him to make war with the saints, and to overcome them. And power was given him over every tribe, and people, and tongue, and nation.
SSPX priests and writers, intentionally or not, play into this fear by making things seem hazy which are not, and by allowing people to have their cake and eat it too, or so they think. SSPX is for those who don't want to take the sedevacantist leap, in case they are wrong, but want to disobey the man they call Pope by having their traditional Mass and rejecting most of his "teachings." All I can say is, "A double-minded man is unstable in all his ways."
SSPX also act as if we must wait for some authority to judge the Pope WITHIN VII ITSELF. No, those clergy who see that the impostor and non-Catholic calling himself "Pope" is a heretic are the ones who pass judgment on him by refusing submission. If there were more of us, we could elect a true Pope without having him come off like "Pope Michael." But SSPX, intentionally or not, has seen to it that we are divided, not united, and that most traditionalists are kept chained to the Rock of Anti-Christ. So ask yourself, which side is the "sect," and which is the Catholic Church? As the Arian crisis proved, just trotting out your larger numbers will avail you nothing. Fear makes people do funny things, and they often mistakenly believe that there is safety in numbers.
You have to see the deception of our time as involving wheels within wheels -- not only is there Novus Ordo, but then there is SSPX to neutralize the traditional movement, and as we see with this St. Gertrude's brouhaha there are even disagreements among sedevacantists, due to human weakness. I've known of one unsung sedevacantist bishop who went off the deep end, and then there was the famously disgraced Francis Schuckardt of CMRI. I am not afraid of the dirty laundry, because it has nothing to say about the correctness of our theological position.
Satan is like an atom-smasher, no matter how small we get, he tries to do even more damage, relentless fiend that he is. But out of this spark, I believe we will start the fire: The Triumph of the Immaculate Heart.