Any day where I learn something new about Catholic theology or the Church is a good day. Looks like today could be a good day.
What's really sticking in my craw on this subject is the denial of communion to Feeneyites by some Sedevacantists. For example, here:
https://philadelphialatinmass.org/
If it's not heresy - and denial of BoD is not, per Fr. Cekada's theologians - in order for denial of BoD to be "mortal sin" a certain moral culpability has to be assessed, no? How can you do this to a whole group of people with different reasons, understandings, etc. with regard to a "denial of BoD"? After all, most Feeneyites seem to me to be in good faith and have very strong reasons for rejecting BoD that do not betray a schismatic disposition for they are Catholic in attitude of submission to the Church's authority.
How can you pronounce something not heresy a "mortal sin" for all who hold a certain "theological error" when even an heretical opinion may not be mortal sin under certain subjective circuмstances?
And there is no existent authority that can weigh in on this such that the objection of Feeneyites to BoD can be judged heretical or schismatic, not Bishop Sanborn or the priests subjecting themselves to him, or anyone else.
Thanks for your patience.
The Dogmatic Sedes tend to always exaggerate things.
For the Resistance, Feenyites would only be banned if they are causing a nuisance. And in that case, their Feenyism is only the indirect cause.
Dogmatic Sedes "have to" in a way be extreme. Because they have made Sedevacantism a dogma, when it is only a theological opinion.
Interestingly it does not hold the same note of certainty as BOD.