There is probably nothing wrong with art for art's sake if we take the phrase seriously, and not take it to mean the kind of poetry written in England forty years ago.
Serious poetry deals with the fundamental conflicts that cannot be logically resolved: we can state the conflicts rationally, but reason does not relieve us of them.
Narcissism and the Confederate dead cannot be connected logically, or even historically; even were the connection an historical fact, they would not stand connected as art, for no one experiences raw history.