I certainly do not think we are the best gaming community. As to numbers, it's really difficult to know for both games. But it can certainly mean it is good enough though.
I don't think anyone has explictley said that. Everyone on this forum thinks the game need to be made better. It isn't criticism of the game that people don't like it's the unpleasent way they go about it, the name calling, the dev bashing which is really uncalled for in my view.
I am very critical of various aspects of the game and aspects that are missing, but I try to go about it in a polite and constructive manner. Others are just destructive in their attitude and that is what gets my nerves. Constructive criticism is fine. Negative attacks on devs, FDev, and forum members that do nothing but annoy people does nothing and could possibly make things worse.
As to the health of the game, again we have no numbers to know with regarding ED. According to FDev they are extremely healthy, better then ever, whether thats true or not I don't know.