I've never personally been a fan of "24-hour" series (or what I would consider other gimmicky series like "The Red Couch"). However, great genre work by definition is work that expands the genre's boundaries. Anyone can write bad science fiction, but some very thought provoking work has been written by Ursula LeGuin, Phillip Dick, William Gibson, and others that expanded what science fiction can be and do. Still life images that included vegetables were around for hundreds of years before Edward Weston...
So I think the issues here are that 1) these are crappy snapshots (IMHO), 2) they do nothing to improve the "24-hour" genre and 3) that they are being publicized as though they were something more precious than they are. I think this reflects more on the photographer's ego than anything.
That said, while digital reduces the cost-per-frame, I've seen plenty of crappy "street photography" images on film, too, and some by very famous photographers.