Footnote from p. 74 of "The True and the False Infallibility of the Popes":
"It must seem quite ridiculous to any one who has any sort of knowledge of the subject to hear a person boldly assert that such and such a Papal Bull must be infallible, because it is directed to the whole Church and signed by all the Cardinals."
I've been arguing this exact same thing with Lad and other sedes forever, he worded it much better than I ever did.
In this footnote, he is criticizing Dr. Schulte for insisting cuм ex is infallible. In so doing, he is refuting the sedes of today who believe the same thing about the V2 docuмents, teachings, etc.
"...One really feels sorry for Dr. Schulte that he should have made such an enormous blunder in the sight of every one who knows anything at all about such matters. To us it is beyond all question certain, that this Bull is not a definition of faith or morals, not an utterance ex cathedra. It is simply an outcome of the supreme Papal authority as legislator, and an instance of his exercising his power of punishing ; it is not done in the exercise of his power as supreme teacher..."