That "wish I could have found more" is an odd one. I wonder what he meant by that, and what kind of photographic journey he was on there (or would have like to have been on).
It's hard to make a judgement without knowing more about his attitude to the person, the dead body, and his reasons for taking the photo. The image itself I find sad, (any death, alone like that, is very sad, but also he's young..), it's also rather beautiful. It seems as if he just fell asleep. I can't help thinking of the documentary I saw a few days ago on Sally Mann which included her most recent work, lots of images. Much more difficult images than this. Yet acceptable to me (I think) because of the care and consideration of her approach, her clear reasons for doing what she was doing. And the way her body of work transcends any individual photograph because it makes us think about the difficult issues of death and what death means.
I don't know Weston's reasons for taking this - and his wish for more bodies - so I feel I definately have to reserve judgement about his motives and intentions.
I think the "wish I could have found more" was more a comment on how EW felt at that time about the work that he was doing. He often commented on if a negative was "important" or not, in regard to the body of photographic work (his, and others)