Well I am sorry but I don’t have time to provide you tertiary level Moral Theology 101 and Systematic Theology 101 papers to bring you up to speed with very rudimentary post CCC understandings of our faith that is properly the preserve of our priests and lay theologians and which gives some idea of what is “under the hood” of the CCC.
Suffice it to say your energy and confidence on the topicof conscience far outdistances your grasp of the balanced matters in question. my advice is the same as what I offered Charlemagne III:
“
As they say, the devil himself can quote the Catechism to serve his purposes.
The CCC like many seminal works, is a thing of beauty and delicate balance of what may seem to be opposing concepts. It’s easy to cherry pick one side of the harmony to suit our personal prejudices and in doing so ignore the difficult task of harmonising our own inevitable ignorances which is the journey of a lifetime…just as the CCC also states.”
Your simplistic understanding of conscience and the need to form it is the same as it always is with those who over-confidently try to punch above their weight. You think you understand, but being self-taught you have no experienced mentor to guide your mistaken understandings of the CCC re conscience.
If you really want to understand where you have gone wrong re invincible ignorance please spend a few days reading the same old false arguments that I did spend time assisting with on
THIS TOPIC starting at post #728.
Even though you are an untrained layman I know you still won’t accept my exposition even though I have the equivalent of a Masters in Theology/Philosophy, even though middle of the road Moral Theology Manuals say the same, even though I simply pass on the mainstream views of my Vatican trained professors of the 1980s, even though I have grown up with highly educated scholar priests at my table and even though I have discussed all these issues with my life-long Dominican teacher friends for the last 30 years since my degrees

. If this isn’t a likely example of invincible ignorance in a sincere Christian I don’t know what is

.
That’s fine. I just wish you might have the circumspect sense of place to see the need to turn down the volume a little on the dogmatic assertions you are making here to atheists. You may find they have a more intuitive grasp of human nature than yourself even with the benefit of a revelation you as yet don’t intuitively grasp.
I won’t be engaging you further on this topic. We don’t share even an agreed/understood set of mainstream theological concepts/vocab that would make discussion efficient or easy and I simply don’t have time to bring you up to speed.