Wow. There are some erroneous things being put forth on this thread.
To be clear, The "Roman" Catholic Church is the nickname of the Latin Church of the "Catholic Church" which has 23 subsidiary Churches.
The 22 of which make up less than 5% of the "Catholic Church."
I could argue that Orthodoxy is both Western and Eastern - because both ROCOR and Antioch have Western Rite Liturgies based on the Tridentine Mass, but I'm not gonna make that argument, because the amount of those Churches are so small compared to the Eastern Rite that it's not really relevant.
The powers/ gates of Hell "prevailing" indicates not that the gates and powers of the Church cannot be breached but that the Church will eventually overwhelm and totally defeat evil when the Church actively engages in the war against principalities and powers. Everyone seems to treat the phrase as if it says, "The Gates of the Church will always prevail against the powers of Hell." Or even a more silly rendition of the images of "gates" from Hell pro-actively attacking the Church.
The Church must always exist, and because the Pope is the final authority in the Catholic Church in all matters of discipline, morality, and dogma, with immediate jurisdiction everywhere, and the ability to proclaim infallible doctrines,
the Roman Church can never, ever fall from standing, because if it falls, the Catholic Church would fall from standing.
Unfortunately, it seems to me it has happened. You aren't actually disputing the facts I bring up, you are trying to change the epistemological certainty of the Catholic Church in a doctrine absolutely foreign to what Rome has spoken - with the case being closed.
No Pope has bound the Universal Church to embrace a heresy or deny a part of the Deposit of Faith. What Popes believe and teach in off the hand or even written comments are simply their opinions and policies, they don't alter the teaching of the Church. Francis may say what he wants about the death penalty, but he's wrong. Until he tries to formally bind the Church to his error he is simply wrong. After that, he is either never going to do it, or automatically lose the office if he tries to. More likely he will never declare it. Changing wording in a catechism doesn't qualify as a binding statement of magisterial force. It's simply putting an erroneous statement into a Catechism.
Are not canonizations binding? If I were a Priest of a Church and I rejected a Saint who was canonized, could I not be excommunicated?
Every Church venerates Pope Paul VI, whether you like it or not, by the authority of the Pope himself. And the Catechism is Rome's official teaching, and it's what's to believed everywhere by everyone, and it is officially a document of the Magisterium. If it wasn't, he wouldn't have asked the Congregation for the Doctrine of the Faith to do so. It's binding.
Canonizations are simply honorifics based on human knowledge, prudence and decisions. They are not part of the Deposit of Faith. They are not apostolic and papal canonizations are not exercises in infallibility.
"To the honour of the holy and undivided Trinity,
for the exaltation of the Catholic faith
and the increase of the Christian life,
by the authority of Our Lord Jesus Christ,
of the Holy Apostles Peter and Paul, and of Ourselves,
after mature deliberation
and frequent prayer for the Divine assistance,
with the advice of Our venerable brethren,
We decree and define .... to be a saint,
and We place (his or her) name in the catalogue of Saints,
decreeing that in the universal Church
(he or she) is to be venerated among the Saints with pious devotion.
In the Name of the Father, and of the Son, and of the Holy Spirit."
Also, Pope Benedict said that they are, as did almost every 19th century Catholic theologian.