While I don't agree with all that Jonathan Jones says in his article he does go some way towards making a good point.
They way photography is presented nowadays goes all out to be superficial. Take for example the number of 'how big can I print' questions that camera forums get. It seems size is everything and has taken over from any sort of consideration of the viewer.
Look closely at detail in a 30x40 print and you cant see the whole picture, stand back and your peripheral vision picks up the adjoining pictures and people walking between you and the picture. So the eye skims the picture, tries to get an impression before moving on to the next.
But you are left with a superficial impression, was the picture about something other than detail? Was it just about the overall composition? What was the cultural or political message (that's where the catalogue comes in useful)?
So what has changed? Well it is so easy now for photographers to have very large prints made, and it seems like a knee jerk reaction to do it. But there are some photographers such as Michael Kenna who still care about the 'human scale' and intimacy, and still print small (by modern standards) pictures. And it is this intimacy that is lacking and what I think Jonathan Jones is getting at. It's not about size, because one large picture on a wall and nobody else in the room would give you intimacy with it, allow you to study it, to think about it.
But a wall full of large pictures and others you can see from the corner of the eye, plus people, are a distraction and nothing feels 'special'. Compare that with coming close to look at a smaller Kenna print, Blakemore, Adams, and it is a one-to-one relationship. You can only take it in from head on to start with, it is too small to absorb in a sideways glance while walking past. And then there is the exclusion of people and other pictures, which forms a closer bond to the viewer and the picture.
So yes, large prints are generally speaking the 'Emperor's New Clothes' of modern photography, and while clearly there are good reasons for them some of the time, the size of a print and how it is presented should be thought about far more than 'how big can I print'.
V