"As I scroll down I note that friend after friend has quit posting...on other networks (Path, Facebook, Instagram) ...they tend to be very active. I see photos of the same people, with their same children and their same dogs..."

Good article. Kind of too radical on showing what actually happened. Besides, I don't think it's just like "Oh new picture? Straight to Facebook" That's for the "average" human. Flickr is more on the "I take photography a little more serious"-side. It's not an obligation but it usually works like that.