Did that Edward Steichen photo attain the value of 2 million pounds because it was a compelling image or because it was a Steichen? If I took a shot like that and presented it in a gallery, shortly after the closing it would be on my living room wall (as many in fact are).
To give all those super-critical devils their due, myself included, I must say that I would have a comment or two to make about many of the shots in the world-famous photograph link. Not the canoe one, though. That one rocks.
We've all had somebody come down hard on images that we thought were good. Sometimes you see the point. Other times you ask yourself, "What was in his coffee this morning?" Or you realize that he's a poser. I find that I often run right into the critique part without first stating the good about an image. And sometimes I'm a little tired and lazy. So I probably come across as more negative than I would like to be perceived. Just because I can make a Monday-morning quarterback statement, does not mean that I do not respect the image or the photographer's integrity in creating it.
By the way, I didn't see the OP's original shot that he said received a lot of criticism. For the record, I think it's a nice shot, although I do harbor a grudge against the entire idea of trashing the dress. There you go, I had to say something negative.