If a person's ignorance is invincible then his judgement is very different from one who was raised as a Catholic.
Who will contest that?
Father Michael Muller's writing on invincible ignorance has been posted and quoted in threads, many times. It neither saves nor damns a person.
To paraphrase St. Thomas Aquinas, one who keeps the moral law will learn the truths of the faith, by an angel if necessary.