What a depressing thread... cynicism rains supreme, but it is not all the fault of some, but a corruption of the majority.
I don't think people are all that negative really. Possibly just a bit fed up with the constant stream of "idea guys".
All that people in this thread are really saying is you need _more_ then "just a gdd" to get your game made.
And some excellent feedback on what is needed
It's just reality based on simple principles like supply and demand...