Its okay, so far. Its by Mark Shea.
“Primacy of conscience” denotes, “Form your conscience with the teaching of Holy Church and act according to it,” not “Search for ways to ignore Church teaching.” Likewise, “prudential judgment” means “Use your best wits to figure out how, not whether, to obey the Church’s guidance.” - See more at: https://www.osv.com/Article/TabId/493/A ... bpNaA.dpuf
While I see what he is doing, those thing aren't exactly what those terms mean. True, a good conscience will be formed according to revelation, and presumably by prudential judgment he means either again conscience (which is an act of judgment of a particular) or he means the act of the virtue of prudence, which in either case should include "thinking with the Church" but must be understood as an act of applied reason, and presumably in terms of the virtue
Primacy of conscience, properly understood, means that one must follow their conscience. This means, if one believes they have to use contraception, but refrains because of the Church, they sin. They probably sin by using contraception as well. Silly people (and this is why I hate the phrase) take it to mean primacy of the subject rule (conscience) over the objective (the moral law). But just redefining it into something it DOES NOT mean... well reading this will make theology less intelligible not more.
It is better said, primacy of conscience, properly understood, only means that if one judges an act wrong, he should not do it, if one judges it morally necessary he must do it. But one can still be morally responsible for making wrong judgment, and hence we have an obligation to form our conscience etc. Or more accurately, an obligation to acquire synderesis, and practice prudence, but we can leave that aside (the conflation of prudence and conscience is a major issue)
In anycase the "denotation" of primary of conscience is simply, one must follow their conscience and one always sins by not doing so, even if the conscience is erronenous. To bring up something else, however related and important for understanding what it entails, and claim that is what the term denotes is simply false and HE KNOWS IT.