There's plenty of avenues here to make art. Simply curating the images which are generated is enough to call it art. In addition, it has a text interface which is somehow connected to the output. The artist could write a poem and show us the output, but they don't have to show us every image, just the one's that contribute in some fashion to the meaning of their words. It's not that different from using aleatory methods, found art, or collage.