The last time any Pope spoke ex cathedra was 1950, when the Dogma of the Assumption was declared. Popes are only considered infallible when explaining a dogma and informing the Church that it must be fully believed. Popes do that very, very rarely.
Nothing in Vatican II was spoken ex cathedra.
These are the only times in history when Popes spoke ex cathedra:
1.“Tome to Flavian”, Pope Leo I, 449, on the two natures in Christ, received by the Council of Chalcedon;
2.Letter of Pope Agatho, 680, on the two wills of Christ, received by the Third Council of Constantinople;
3.Benedictus Deus, Pope Benedict XII, 1336, on the beatific vision of the just prior to final judgment;
4.Cum occasione, Pope Innocent X, 1653, condemning five propositions of Jansen as heretical;
5.Auctorem fidei, Pope Pius VI, 1794, condemning seven Jansenist propositions of the Synod of Pistoia as heretical;
6.Ineffabilis Deus, Pope Pius IX, 1854, defining the Immaculate Conception;
7.Munificentissimus Deus, Pope Pius XII, 1950, defining the Assumption of Mary.
You seem desirous of having Catholics accept what came out of V2, but what about the pronouncements of Church councils before that? Or is it only because some of the documents to emerge from V2 were favorable to Jews?
As for me, I am not a Protestant or an Orthodox Christian. I am a baptized Roman Catholic of Jewish birth and upbringing.
And if you want to know why a lot of Christians (and Jewish Christians like me) have issues with the idea of being asked to love the antics of people who hate our Faith, this is one example of why: (NOTE: profanity in this video; watch with caution)
youtube.com/watch?v=6Ek5G6337yU