Moving the furniture one inch per year is not simply folk wisdom. It's sound theology.
There are questions, of course, about what constitutes a matter of taste. But few of us would really disagree that once you do find that mystical territory of taste, rational argument doesn’t enter into it.
Douthat is right in his reminder of the important ways in which liberal Christianity contributes positively to Western culture, but he is wrong in his diagnosis of our decline.