You ignore Catholic teaching that consciences must be formed by the Word of God, that one may never do evil so good can result, and a number of other principles on Catholic teaching on conscience.  

One is culpable when "a man 'takes little trouble to find out what is true and good, or when conscience is by degrees almost blinded through the habit of committing sin'"

"[A]ssertion of a mistaken notion of autonomy of conscience, rejection of the Church's authority and her teaching, lack of conversion and of charity: these can be at the source of errors of judgment in moral conduct."

Are these not Catholic teachings on conscience?