The 1917 Code of Canon Law confirmed the bull *Cum ex apostolatus*, which annuls the elevation of a heretic to the papacy.
Apostate Prevost is a formal manifest heretic, approves of ‘Fiducia supplicans’ that is, the practice of sodomy and heretic Amoris Laetitia
The Magisterium of the Church also teaches that all canonizations or pontifical acts performed by a heretic elevated to the papacy are invalid; therefore, all bishops appointed by the heresiarch Bergoglio are invalid.
“A doubtful pope is no pope.” — Canon Law, 1943
Great Apostasy: Prevost approves the parody of …
F.X. Wernz, P. Vidal: “Finally they cannot be numbered among the schismatics, who refuse to obey the Roman Pontiff because they consider his person to be suspect or doubtfully elected on account of rumours in circulation.” (Ius Canonicum, 7:398, 1943)
One more comment from la verdad prevalece
Wernz-Vidal — Canon Law, 1943
“Through notorious and openly divulged heresy, the Roman Pontiff, should he fall into heresy, by that very fact (ipso facto) is deemed to be deprived of the power of jurisdiction even before any declaratory judgment by the Church... A Pope who falls into public heresy would cease ipso facto to be a member of the Church; therefore, he would also cease to be head of the Church.” And also: “A doubtful pope is no pope.”
I think it's a difficult argument to make definitively and decisively. Therefore, it is much more correct to say the so-called "excommunications" are completely without effect since the troubling state of the Church--awash in heterdoxy and a hierarchy sympathetic to it, a Church that rubber stamps the Consecration of Communist Chinese Bishops without a second thought and under the guidelines of a secret agreement with them, a Church that smiles upon sexual deviancy, receives such deviants in audience, writes books about Our Lord (Tucho) that are shamefully immoral, issues encyclicals that cause moral confusion in the universal Church, and more-- such so-called "excommunications' are without effect since a state of necessity and emergency are absolutely clear....far more so today than they were in 1988.
St Peter
“Simon, Simon, behold, Satan demanded to have you, that he might sift you like wheat, [32] but I have prayed for you that your faith may not fail; and when you have turned again, strengthen your brethren
So we have to wait on Peter in the mean time take St Paul advice hold onto tradition which was handed down SSPX is right side of history