But Ladislaus is not a sede, so my questions were simply to illustrate the silliness of what he said.
Point taken and well illustrated.
However, I wouldn't count out Ladislaus just yet, he has some sede-tendencies.
Disputationes doesn't understand my position at all ... despite my having explained it, oh, about fifty times.
As a sede-doubtist, I hold that due to the widespread and well-founded doubt regarding their legitimacy, the Vatican II popes can no longer formally exercise authority but that they remain materially in possession of their office until the Church says otherwise. According to the principle
Papa dubius papa nullus, they can safely be ignored until the doubt gets resolved one way or another by Church authority.
In addition, even if one WERE a sedeplenist, which I am not, no theologian has ever held the designation as "Doctor of the Church" to be infallible.