Of course it doesn’t seem at all possible, what with the plethora of cameras out there, and the resultant pics poured daily into the black hole gigs of the web (like Flickr for one). Well, here’s some context from the article: “…Yet wandering the galleries of these two shows, you can’t help but wonder if the entire medium hasn’t fractured itself beyond all recognition. Sculpture did the same thing a while back, so that now “sculpture” can indicate a hole in the ground as readily as a bronze statue. Digitalization has made much of art photography’s vast variety possible. But it’s also a major reason that, 25 years after the technology exploded what photography could do and be, the medium seems to have lost its soul…” Read more.
You might want to check this NY Times article link too, about staged photography in the early days (which would seem to fly in the face of the article above); it’s in three parts, with illustrations. There’s an article here too about a similar suject.