You don’t have to be without virtue or morality to follow this advice.
That’s a strawman argument. No one suggested giving up virtue or morality.
Wrong. De-emphasizing social issues is giving up morality. If you don't stand for a strong moral fiber, then I can't trust you to cut taxes and secure the borders.
Why the gratuitous sneers at Baptists and those who speak of natural law by Denninger then?
I don't think the guy has any idea of what he is talking about. He and his followers use natural law as a basis for going after the "banksters" all the time. They just don't use moral or theological terms (probably because they don't know any). Because they are ignorant, those who are versed in the moral basis for the rot we see are supposed to not used language which has been used politically since the founding?