[yew]

I'd call that a postmodern understanding of art, and one originating from just one particular sect of postmodernism at that. There's a lot of postmodernists who would say that the artist's intentions in creating the work are secondary, or even irrelevant. (A lot of others who would say it too.)

The world of art is filled with warring philosophies just like everywhere else and you can't pretending that your preferred definition of 'art' is 'the one, the true, the only'. (Well, you can. Just anyone who adheres to a different philosophy of aesthetics won't take you too seriously.)