I'm not really getting hung up on what is defined as art, what I do have issue with I suppose is that now more than ever there exists an art infrastructure that directly or indirectly is publicly financed, that allows artists to have a career in art without having to appeal to any size of audience. As long as you tick the boxes of the curators and critics with the power, the money will follow. Of the images in the linked article, were I to mix the images from Thomas Struth, Peter Frazer or Anna Fox with 100 random images from the average mini lab, would anyone be able to pick those out as works of art? I seriously doubt it.
To some extent I think art curation should be somewhat elitist, as bad as that sounds, otherwise the National gallery would be full of pretty watercolours, but this is the other side of the coin where we have work that needs all the written support it can get as it just doesn't stand up in isolation.