There is not irony. The Catholic Church claims to be an instrument of God that can infallibly discern objective truth; truth that is independent of the church’s opinion or wishes. If the church says something is true, and then changes its mind and says it was wrong, then the church logically cannot be infallible.
From my extensive studies and reflection, I have found that every religion on Earth, save the Catholic religion, has fatal logical flaws that must mean they are wrong. I have found no such flaw in the Catholic Church. There are numerous issues that were not explicitly defined in the bible or by the early apostles. There have been long debates to discern the truth. Some sides in these debates were wrong. It was the church as a whole that discerned the truth, and in most instances, the incorrect side humbly submitted to the church.
There have also been political decisions that have been indefensible, such as diverting troops heading to retake Jerusalem to attack Constantinople instead. There have been management decisions that were morally repugnant, such as allowing predatory priests access to children, whatever the mitigating circumstances. However, none of these decisions impute the constant maintenance of the deposit of faith. Immoral popes and leaders have never attempted to justify their actions with theology that conflicted with established doctrines.
I accept as a matter of faith that the Catholic Church is the one, holy, catholic, and apostolic church founded by my Lord incarnate, Jesus Christ. I accept this rationally and logically. I have inspected each doctrine and found it perfectly internally consistent. I acknowledge as a matter of intellectual honesty that the church is led by very intelligent philosophers who are never going to allow any deviation from this perfect consistency. It is by faith alone that I ascribe this to divine guidance rather than greed and lust for power.