Now, how are some / many Catholics embracing something like this now? We bifurcate human activity into two realms. We say “He meant well in his heart”. Or, “He did not mean that”. We thus divide the heart’s action from the body’s action. It is always true that we cannot tell with the certainty of vision what someone’s intentions are. However, we can be morally certain.
Moreover, when we “bifurcate” the action into two things, we as it were paint two agents: The mind / heart and the body. This bifurcation resembles Gnosticism. If “he means well” in his heart, then he can keep pursuing the “solitary sin” and not be sinning! If the married man, who left his wife and “got a divorce”, takes up with a new woman, who is not his wife, and “looks to me like a man of pure heart”, then “he is probably not in the state of sin”. This is the thought process of many Catholics, lay and clerical.
Worse, we as it were “let” the person who “means well” stay in his sinful bodily patterns. If it is true that we cannot judge with certainty the state of his soul, we can certainly know that his bodily patterns are counterproductive, deleterious, necessarily inhibitive of happiness, against God’s will, unholy, objectively sinful. Thus, no man can be truly happy who is engaged in these activities.
Now, the Church’s mission is to bring the good news of the Gospel to all peoples. We are to bring the Joy of the Gospel to all peoples. And if no person can be happy who is engaged in these vicious activities, it is part of our Missionary Mandate to announce this to each one. Thus, the preaching of the Law is part of the Gospel. For the Gospel is the power to accomplish the ways of God, and the Law indicates these ways.
If we were to leave the man who pursues unnatural sex to his own deluded understanding of the good, we would rob him of the Joy of the Gospel. This is not what Jesus would have us do, nor would it be good for the man.