It's definitely, as you say, a syndrome. I'll further define it as a derangement syndrome.

I mean, why are the sedes allowed to prevail with their false view of +ABL?

Mrs. 54Rosary speaking:
Meg or anyone else,  I was wondering if you could point out any of the quotes that are incorrect from Archbishop Lefebvre on our posted article ''ARCHBISHOP LEFEBVRE TRUTH and Sedevacantism".
I want you to know that anyone who calls me a sede or sedewhatever is incorrect.  I understand that jorge bergoglio is not the pope and POPE BENEDICT XVI is the pope.
Also, your words toward those who are other Catholics are very hostile to the point of being not of the Catholic spirit.
To love your enemies is the way that Jesus wants you to be.
I am reading "The Mystical City of God'' of Venerable Mary of Agreda, volume 1, and it was said by THE BLESSED VIRGIN MARY that we are "wormlets".  Now this is hard to hear for me and possibly for you as well as for others.  BUT it is true and I believe what the MOTHER OF GOD and our Mother wants us to know so that we can face this TRUTH and do something about it such as repent, make reparations, or pray for others, etc.
GOD BLESS YOU, MEG.

For a mere $2.50 (plus shipping and handling), you can get the Angelus issue cited here --
https://angeluspress.org/products/angelus-jul-1986

“You know, for some time, many people, the sedevacantists, have been saying, ‘there is no more pope’. But I think that for me it was not yet the time to say that, because it was not sure, it was not evident…” (Talk, March 30 and April 18, 1986, text published in The Angelus, July 1986)

“…these recent acts of the Pope and bishops, with protestants, Animists and Jews, are they not an active participation in non-catholic worship as explained by Canon Naz on Canon 1258§1? In which case I cannot see how it is possible to say that the pope is not suspect of heresy, and if he continues, he is a heretic, a public heretic. That is the teaching of the Church.” (Talk, March 30 and April 18, 1986, text published in The Angelus, July 1986)

“It is possible we may be obliged to believe this pope is not pope. For twenty years Mgr de Castro Mayer and I preferred to wait…I think we are waiting for the famous meeting in Assisi, if God allows it.” (Talk, March 30 and April 18, 1986, published in The Angelus, July 1986)

“I don’t know if the time has come to say that the pope is a heretic (…) Perhaps after this famous meeting of Assisi, perhaps we must say that the pope is a heretic, is apostate. Now I don’t wish yet to say it formally and solemnly, but it seems at first sight that it is impossible for a pope to be formally and publicly heretical. (…) So it is possible we may be obliged to believe this pope is not pope.” (Talk, March 30 and April 18, 1986, text published in The Angelus, July 1986)

“Now some priests (even some priests in the Society) say that we Catholics need not worry about what is happening in the Vatican; we have the true sacraments, the true Mass, the true doctrine, so why worry about whether the pope is heretic or an impostor or whatever; it is of no importance to us. But I think that is not true. If any man is important in the Church it is the pope.” (Talk, March 30 and April 18, 1986, text published in The Angelus, July 1986)

Act bravely, my Brethren; take courage, and trust in the Lord. The time is fast approaching in which there will be great trials and afflictions; perplexities and dissensions, both spiritual and temporal, will abound; the charity of many will grow cold, and the malice of the wicked will increase.
The devils will have unusual power, the immaculate purity of our Order, and of others, will be so much obscured that there will be very few Christians who will obey the true Sovereign Pontiff and the Roman Church with loyal hearts and perfect charity. At the time of this tribulation a man, not canonically elected, will be raised to the Pontificate, who, by his cunning, will endeavour to draw many into error and death.
Then scandals will be multiplied, our Order will be divided, and many others will be entirely destroyed, because they will consent to error instead of opposing it.
There will be such diversity of opinions and schisms among the people, the religious and the clergy, that, except those days were shortened, according to the words of the Gospel, even the elect would be led into error, were they not specially guided, amid such great confusion, by the immense mercy of God.
Then our Rule and manner of life will be violently opposed by some, and terrible trials will come upon us. Those who are found faithful will receive the crown of life; but woe to those who, trusting solely in their Order, shall fall into tepidity, for they will not be able to support the temptations permitted for the proving of the elect.
Those who preserve their fervour and adhere to virtue with love and zeal for the truth, will suffer injuries and, persecutions as rebels and schismatics; for their persecutors, urged on by the evil spirits, will say they are rendering a great service to God by destroying such pestilent men from the face of the earth. But the Lord will be the refuge of the afflicted, and will save all who trust in Him. And in order to be like their Head [Jesus Christ], these, the elect, will act with confidence, and by their death will purchase for themselves eternal life; choosing to obey God rather than man, they will fear nothing, and they will prefer to perish [physically] rather than consent to falsehood and perfidy.
Some preachers will keep silence about the truth, and others will trample it under foot and deny it. Sanctity of life will be held in derision even by those who outwardly profess it, for in those days Jesus Christ will send them not a true Pastor, but a destroyer.
(Works of the Seraphic Father St. Francis Of Assisi [London: R. Washbourne, 1882], pp. 248-250; underlining and paragraph breaks added.)

Did the Archbishop ever condemn sedevacantists as schismatics/non-Catholics/outside the Catholic Church?  If not, how can the dogmatic R&R's like Sean Johnson say they follow him?

I've wondered this myself.  +Lefebvre was clearly at least tolerant of (if not at times very sympathetic with) sedevacantism.  If Johnson gratuitously asserts that my assertion is gratuitous, I could easily dig up a couple dozen quotes to demonstrate this.

Here is Archbishop Lefebvre saying sedevacantism is schismatic:

Archbishop Lefebvre:

"You know that some people, and, uh, I must say that some priests were with us, and they tried to lead us into schism.

"And they say there is no pope, no pope now, no cardinals, no bishops, no Catholic Church.

"We are the Catholic Church.

"I don't say that.

"I don't accept that.

"That is schism.

"If we abandon Rome; if we abandon the pope, the successor of St. Peter, where are we going?

"Where?

"Where is the authority of the Church?

"Where is our leader in the Church?

"We can't know where we are going.

"If the pope is weak; if he don't do his duty; it's not good.

"We must pray for this pope.

"But don't say that he is not the pope."


There follows a lengthy dissertation on the case of Paul resisting St. Peter, as well as the condemnation of Pope Honorious, whom the Archbishop also noted never lost the papacy.
It was given by Archbishop Marcel Lefebvre on May 10, 1983.

It is available from STAS audio for $5 (and the CD also includes other ABL English language sermons from 11-6-1977 and 4-19-1986).

https://www.cathinfo.com/sspx-resistance-news/archbishop-lefebvre-confirmation-sermon/15/

For the third time now, Meg, these quotes were compiled by John Daly.  I provided the link in a previous post, but here it is in case you missed it the first time.
http://www.fathercekada.com/2012/09/04/pro-sedevacantism-quotes-from-abp-lefebvre/

It has nothing to do with whether I am lying.

For a mere $2.50 (plus shipping and handling), you can get the Angelus issue cited here --
https://angeluspress.org/products/angelus-jul-1986

Be my guest.