Except that even smart clothes have a functional use: as clothes. Fake shutters have no utility value. A closer analogy to dressing up for the opera would be a

Except that even smart clothes have a functional use: as clothes. Fake shutters have no utility value. A closer analogy to dressing up for the opera would be artisanal hand-carved decorative (but functional) shutters basic plain shutters. They both have the same utility but one has nicer aesthetic.