the whole point of the quoted section is that one must question one’s own conscience when it is formed in opposition to authority duly instituted by Christ.
choose, the text reads “placing freedom in opposition to authority overlooks something”. Note “freedom” not “conscience”. If you read further into the document we come to what Ratzinger means by something “deeper”.
I have included some of his relevant quotes below:
"“It has become apparent that the question of conscience leads in fact to the core of the moral problem and thus to the question of man’s existence itself.”
“But then the silencing of conscience leads to the dehumanization of the world and to moral danger, if one does not work against it.”
Conscience must not be silenced and blind obedience to anything does silence conscience.
“Certainly, one must follow an erroneous conscience. But the departure from truth which took place beforehand and now takes its revenge is the actual guilt which first lulls man into false security and then abandons him in the trackless waste.”
Ratzinger outlines the dangers of an erroneous conscience which is why we should all inform our conscience before making decisions. However, he does emphasise the primacy of conscience by saying we must follow, even, “an erroneous conscience.”
“Newman embraced an interpretation of the papacy which is only then correctly conceived when it is viewed together with the primacy of conscience, a papacy not put in opposition to the primacy of conscience but based on it and guaranteeing it.”
I think anyone arguing against “primacy of conscience” should read this section in detail. This is part of the “deeper” thing Ratzinger was talking about; the papacy is not in opposition to the "primacy of conscience " but is "based on it ".
“For Newman, the middle term which establishes the connection between authority and subjectivity is truth. I do not hesitate to say that truth is the central thought of Newman’s intellectual grappling. Conscience is central for him because truth stands in the middle.”
“Much more than that, conscience signifies the perceptible and demanding presence of the voice of truth in the subject himself. It is the overcoming of mere subjectivity in the encounter of the interiority of man with the truth from God.”
“A man of conscience, is one who never acquires tolerance, well- being, success, public standing, and approval on the part of prevailing opinion, at the expense of truth.”
“John could say: you do not need such instruction, for as anointed ones (i.e., baptized) you know everything (cf. 1 Jn 2:20). This does not mean a factual omniscience on the part of the faithful. It does signify, however, the sureness of the Christian memory. This Christian memory, to be sure, is always learning, but proceeding from its sacramental identity, it also distinguishes from within between what is a genuine unfolding of its recollection and what is its destruction or falsification. In the crisis of the Church today, the power of this recollection and the truth of the apostolic word is experienced in an entirely new way where much more so than hierarchical direction, it is the power of memory of the simple faith which leads to the discernment of spirits. One can only comprehend the primacy of the Pope and its correlation to Christian conscience in this connection. The true sense of this teaching authority of the Pope consists in his being the advocate of the Christian memory. The Pope does not impose from without. Rather, he elucidates the Christian memory and defends it. For this reason the toast to conscience indeed must precede the toast to the Pope because without conscience there would not be a papacy. All power that the papacy has is power of conscience.”