I’m a Lutheran, I don’t think the Papal system invented by the Hildebrands in the 11th Century is the Church to begin with, but if you’re going to be a Papist, you should at least be a sedevacantist.

The Popes have all been notorious heretics for decades. The bishops are all just as bad, and those who have any respectability are at odds with the “Vicar of Christ.”

It makes more sense to say that Bergoglio is not the Pope, the bishops are not actually bishops, and the Catholic buildings are occupied by an apostate counter-church. You really can’t accept the claims of Vatican I unless you take some iteration of that position, because the Magisterium has objectively led the entire religion into damnable error.