No. No we do not. This shows you don't even understand the SV position. It is the fact that these heresies and errors have come through the universal ordinary magisterium, which is impeccable and infallible and protected by the Holy Ghost, that we conclude that these men cannot possibly be legitimate Popes. Not because they are capable of sin, error and abuses themselves.
DL, what the pope teaches is not always the teachings of the Church's Universal and Ordinary Magisterium.
(1) When we say "Universal" we always mean since the time of the Apostles and for all time,
(2) When we say "Magisterium", we mean teachings of the Church that enjoy the full authority of the Church,
(3) When we say "Ordinary", we mean all teachings of the Church taught in the usual, day to day manner through the Church's hierarchy, priests, nuns, parents, teachers, and so on.
The Church's Universal Magisterium, which is indeed always infallible, is not the pope, or the pope and bishops, or a Council. The duty of the pope is to protect, preserve and promulgate the Church's teachings, i.e. the Church's Magisterium, but he is not divinely protected from not doing his duty or promulgating corrupted doctrines.
The Syllabus of Errors:
Quote
22. The obligation by which Catholic teachers and authors are strictly bound is confined to those things only which are proposed to universal belief as dogmas of faith by the infallible judgment of the Church. — Letter to the Archbishop of Munich, “Tuas libenter,” Dec. 21, 1863.
R&R's follow this error^
The Pope is infallible on definitions of faith and morals, that's it. And this is due to his authority being bound up in the magisterium. He isn't impeccable, we've never argued that. Alexander VI, along with the other Borgia Popes abused the powers of the papal office but NEVER pronounced heresy through the universal ordinary magisterium like these post-conciliar popes have.
No, it is altogether ridiculous to say R&R follow the condemned error. To be clear, the pope is infallible only when he defines a doctrine ex cathedra concerning faith or morals to be held by the whole Church, beyond that he can do exactly what the conciliar popes have done, and worse if he chooses to do so.
The error of the sedes is the idea that the infallibility that protects the Church in all that concerns faith or morals, also protects it from every and all error detrimental to the Church and Faith. This apparent irremediable error is one of the fundamental errors of sedeism.