As one who has been (in the past) not hesitant in advancing my thoughts on Father Pfeiffer's qualifications for a pointed hat (just look through my posts) I must say that this time I did find his sermon to be EXACTLY what the Archbishop would have said and EXACTLY what the church teaches on the questions he raised.
I am not, however, surprised that the bitterness of the attacks the talk and this thread has engendered are not the direct consequence of the complete collapse in other areas of ecclesiology.
First, the combative tones used here demonstrate the reality of the dictum of what happens when the "shepherd is struck"... armchair theology holds sway.
Second, Francis' confusing activities have driven more sensitive types directly into the arms of the sedevacantists with their (on the face of it) plausible theological arguments but upon careful comparison with ALL the magisterial teachings clearly problematic opinions.
Mr Arent (above) for example is a classic case of one who in the first fervor of the resistance fled to the sede refuge of Bishop Sanborn and now quite readily parrots lines from Vatican I that seem to "prove" ole' Frankie ain't what they think he is.
However, the same Council infallibly teaches a perpetual succession in the primacy until the end of time. Frankie isn't the only fly in the ointment if that teaching is to be held of faith (which it is) so where does that leave the Church since 1958 ? Bp. Sanborn officially (now) holds there hasn't been a Pope since 1958, though for the first year of his priesthood he mentioned Paul VI in the Canon of the Mass.
Clearly inquiring minds are just that INQUIRING and if sedes think they can magisterially bamboozle us into holding opinions upon which they have themselves changed (and continue to change) they are quite mistaken.
Bp. Williamson is quite correct to repeatedly say :"we live in confusing times" which means we are all confused because of these events but the Lord God is quite in control of the matter so why worry ?