So, the only point of all this that I can understand is that the gum-smacking teenager, working minimum wage at the mall at Christmas time who knows only how to say "look here and smile" while pushing down on a buttom on the locked-down camera is superior to the expert photographer, who happens to be a president of a major corporation, but photographs out of the love of it and as an artistic release. The fact that this individual is known worldwide for his photographic and artistic skills is irrelevant. He's no pro, so he should just sit down and shut up.
I wouldn't see that as the only point of this thread. I think there are different interpretations of what the original quote means. Early on, there was a message running through the discussion that it meant something along the lines of:The challenge for the amateur photographer is that all photographic possibilities are open to them.
That often isn't true of a professional, who while having diverse interests, generally becomes known or specializes in a specific area of photography (just as many people in other professions specialize).
The quote could easily be interpreted as a lament of a professional, not as an insult to amateurs; and certainly not a comment on the technical or artistic competence of amateurs.
Somehow the message that amateurs are in a difficult (or envious) position because they have no limits was lost along the way and a huge divide opened.
I think I'll stick with the early meaning and agree with it. The big problem for me now as an amateur (I used to investigate crime scenes, so shot professionally within that area - but no longer) is that I can go out and photograph anything that pricks my interest. Trying to become proficient at any one area then takes much longer.