"A well formed conscience would be in complete harmony with Church doctrine."

This is the tripe that the traditionalists and men who run the magisterium push. It requires that you have other people do your moral thinking for you. The two historical examples of that particular way of thinking is Stalinists of the 1930s, who followed the Party Line without question; and Adolf Eichmann, who followed the orders of his superiors without question. Neither is a good model to follow.

What the magisterium is asking for is a sin against sloth. Sloth is generally thought of as laziness, but the Latin name of the sin, "acedia", means "not caring". The magisterium is telling us not to take the care to make our own decisions, and this is wrong.