And yet Catholicism is not sufficonfidently confident in the power of truth and, thus, leans on its authority as well.
The problem with your statement here is one you’ve been pretty consistent with, and is common. You don’t fully consider the Catholic perspective, whether you agree with it or not.
In the Catholic perspective, the authority you refer to is none other than that of the Holy Spirit given by Christ. It is not the men of the Church relying on some concept of earthly authority. It is obedience even/especially at the level of the apostolic office to the structure and method of transmission of Truth that Christ provided.
As demonstrated clearly through all the historical heresies, schisms, and continuing proliferation of schismatic beliefs, a simple appeal to truth based on persuasive argument or interpretation is not sufficient to maintain unity and protect the Body of Christ in Truth. God knows this. That is why He has provided various other mechanisms of providing His children with an assurance of what is true that is sufficient to fend off the deceptions of the devil and the foolishness and pride of man. The greatest of these gifts is His Divinely Instituted Church, Christ’s own Body, preserved and led by the Holy Spirit Himself. The Church manifests in not just or even primarily Scripture, but through Tradition and through the Apostolic offices (as described in Scripture, btw).
In short, Scripture alone has only caused endless fractionation; relying on that is like your argument of relying solely on the Truth of an argument. This has been endlessly demonstrated to fail. God knew this; He provided other means to safeguard His children, and one of those means is authority.
We foolish men are easily led astray. Authority provides a stamp of guarantee. And it is not through any lack of confidence in the truth, but rather through the will of God and the authority of the Holy Spirit, that the Church properly proclaims Truth.
Interestingly, this tension is often resolved by a bifurcation between the clergy and the laity with the former doing the thinking about dogma and the latter submitting to its authority.
This dichotomy existed through most of history largely for practical reasons. Education systems were accessible only to few through no fault of the people of the times. In modern times, you find much more lay education, but yes, some inertia due to centuries of culture that tends to leave many among the laity fairly passive. Is there anything wrong with that?
Obviously, though, Protestants do not have faith that Catholic dogma has been affirmed by the Holy Spirit and thus do not believe that they are rebelling against God.
And that just gets to the crux of the argument: what is the Church, and how did God intend to transmit Truth?
What baffles me is how obvious it is that the Protestant “experiment,” if you will, has failed so dramatically; that the proliferation of even contradictory beliefs demonstrates that whatever methods Protestants are using to try to discover, preserve, and transmit Truth have not been sufficient. There must be something more. The Catholic answer is simply “The Church.” The Tradition and Apostolic authority spoken of in the Bible, and that gave the Bible its form.
But the fact remains, Catholics are discouraged from forming an opinion about dogma, right?
I don’t believe that the question itself makes sense.
Are you “discouraged from forming an opinion” about the reality that there is a force that makes matter fall to the ground? And, as more information was verified about that force we call “gravity,” are you “discouraged from forming an opinion,” for instance, about the operation of that force as far as its measurable relationship between bodies of matter?
Of course, there are aspects of how the force of gravity acts that we didn’t always and even don’t now understand. Speculation and investigation into those questions is certainly encouraged by science.
I think that is a very accurate analogy to how the Church views and “encourages” or “discourages” “opinion” about dogma.