I see a Feeneyite debate here; nothing new here.
So true, which is why I am beginning not to participate anymore. But, "facts are facts," as they say:
1) Father Feeney died in full communion with the Pope of his day, Pope Paul VI.
2) Father Feeney received a public Mass of Christian Burial presided over by his bishop.
3) Father Feeney never "recanted" his (alleged) "heresies."
4) Many of Father Feeney followers are in "full communion" with Rome.
5) All censures, "if there were any", were expunged by Pope Paul VI, who personally sought the reconciliation of Father Feeney.
6) Sedevacantism is just a theological opinion, nothing more. No one can "bind" anyone to believe, let alone profess, that the Chair of Peter is vacant.
7) The SSPX allows known "Feeneyites" to receive all of the Sacraments in their chapels; written agreements exist for this.
8) We ought to never presume and/or assume the salvation of any non-Catholic and/or that person does not need the Sacraments. Pope Pius IX explicitly condemned any such presumptions, as did Saint Pope Pius X.
9) Time & Eternity will tell if there are any truly "invincibly ignorant" individuals or not.
10) Time & Eternity will tell if there was any "salutary repentance at "death's door" and how often that occurred.
Until then, it is probably better to "agree to disagree."
11) I do not wish to be a "combatant".