Well, there is something to that train of thought...
Will Matthew's AI be "junk" or "even worse" if it confirms the teachings you reject?
You seem to suffer from some sort of double standard and self-confirming bias.
AI says the conciliar pope are not heretics, we know they are heretics. That's not a double standard, that right there discredits that AI.
I don't have anything to say about Matthew's AI, I'm sure that he will release it when he's ready.
But, in charity you owe it to all the new converts to refute these erroneous lies of the "buggy" AI concerning the above OP.
Far as I'm concerned, I already did. Pope St. Pius V gave us the law of Quo Primum. He made it a law that nothing be omitted from the Mass, we have no need for AI to tell us that.
If you really believe what you are saying (unless you are a liar) then wouldn't you have a duty of charity to defend the truth and help those who could be led astray from falling into a pit of error?
Again, as far as I'm concerned, the sedes are the ones in error, you are trying to use that contradictory AI to convince us they are not. So be it, I hope you are right, I really do.
What do you think was the Catholic principle at play was when Pope St. Horsmodius said in his profession of faith.
"In no way do we desire to be in communion with those who do not agree with this Apostolic See."
And,
"We likewise condemn all who remain in communion with him."
And,
"I promise that from now on those who are separated from the communion of the Catholic Church, that is, who are not in agreement with the Apostolic See, will not have their names read during the sacred mysteries
I never heard of him, so google says this....
"There is no record of a "Pope St. Horsmodius." The name is likely a misspelling of
Pope St. Hormisdas (pope from 514 to 523)."
At any rate, whatever it is that you are trying to make of it, it appears to me that your quote is the direct result of the Acacian Schism, the AI says:
"The schism ended in 519 when Eastern bishops signed the Formula of Hormisdas, reaffirming papal primacy and Chalcedonian orthodoxy."