It's not theologizing, you Old Catholic Prot heretic morons, you.
It's simply about the indefectiblity of the Church.
Archbishop Lefebvre admitted this, and so you slander him by attempting to hide behind him.
I've given you numerous outs to avoid having to deny this dogma, without which the Church is rendered meaningless, and you turn yourselves into your own rules of faith.
While the limits of "infallibility in the strict sense" are more narrow, the simple fact is that if the Church's Magisterium and Public Worship get so bad that you must refuse communion with what you claim to be the legitimate hierarchy of the Catholic Church, then that means that the Church has defected in her overall mission of safeguarding the truth and of sanctifying souls.
You also ignore most of the teaching of Vatican I, that the See of Peter cannot be blemished by any error. If this isn't a blemish that there's no such thing.
And, at the end of the day, the fact that I've offered you several lifelines for you to keep intact the Catholic faith, while being able to put the picture of Prevost up in your vestibule ... and yet you continue to refuse it and instead smear and blaspheme Holy Mother Church by declaring that this Whore of Babylon is the Church, and that the Church is responsible for this destruction of souls ...
that means that you are pertinacious heretics.
Otherwiwse, you could accept Father Chazal's well articulated explanation for the crisis, or else accept +Lefebvre's explanation for how we can fall short of actually considering the See vacant for certain, but appealing to uncertainty regarding the Minor.
But instead you are hell bent on smearing, slandering, and blaspheming the Church.
Begone, Satan. God will judge you severely for promoting these heresies, especially when you have been warned and alternatives have been presented to you.