there's no clear subject in a graphic sense
I agree. But that's because "things age and fall apart" is about as far a subject you can get "in a graphic sense". But if you look at the photograph as the reprensentation of something that is old, i.e., of something that once was new, you see what Atget saw, his now (the old) and its past, that is, graphically speaking, the beautiful symmetry that once was, and how it plays with both diagonals and the mystery of light and shadow.
This ambiguous play with time, with present and past, is part of the magic of Atget, a lesson well learned by Walker Evans.
There's no clear internal logic to the image as such.
It's a photograph of something that was there, in the world. There is no clear (visual) internal logic in what is in the world.
I understand that the photograph may be successful in the sense of a historical document, a recording of the 'thing' that was, at that moment. But as an artwork in itself, I don't find it successful in the least.
There's no difference between the two for Atget. That's why he called his photographs "artistic documents".
The document is capturing these old objects and landmarks of Paris' past as they were then. The "art" comes from the craftmanship.
the skewing of the image is not documentary
The image isn't skewed. If you look at most diagonals, you see it's actually pretty straight. It's elements in the scene that are skewed. And not all of them skewed in the same direction.
For these reasons, this photo must have been quite a challenge for him. He could have said This is all skewed, makes no sense graphically speaking, I'm moving on. But no. He cared enough to set up the camera and tripod, and tried to find a way to make it make sense, to make it somewhat harmonious even though things are skewed left and right and up and down.
He could have framed it like Don's crop — which, I suspect, a lot of us would have done. But this would have left the sign out. But he decided to give us just enough of the straight side walls to give us a sense of how much things are falling apart (compare the two poles holding the sign: the right one is straight, it's the left one that has given in).
But in order for the viewer not to be totally attracted (or rather, distracted) by all that is skewed, he puts smack in the middle of the photograph the only thing that is stable, that graphically "makes sense", that is, the engraved makings of the name of the editor and the second store cliché shop—a whole element which, by the way, looks like a tombstone. From that center you "see" the symmetry that was. If you start there, the picture makes sense.
What makes you sure that this was deliberate? Maybe he was just in a hurry? Maybe he had kicked the tripod just before exposure, and didn't realise until he developed the plate?
If you're walking around Paris carrying an 8x10 camera, plates, tripod, etc., you're never in a hurry. Moreover, he lived in Paris. If he had made a mistake like kicking his tripod before exposure, he would have come back another day. Don't forget he was 53 years old when he took this picture. He knew what he was doing.
As I said, this is a tough and challenging picture to take — koraks is right in saying it makes no sense graphically, but it's the scene that makes no sense, it's the scene that's very difficult to organize visually in order for it to make sense as a photograph. Atget was obviously interested in it, and I like his solution to the visual problems it poses. What I'd be curious to know is if there was more than one negative, i.e., if he tried other solutions and, in the end, decided this was the "best" one, the closest he would come to solving this visual problem.