I found it quite a stretch to call manufacturing exactly identical iPhones "truly one of our civilization’s greatest accomplishments". An impressive feat, to be sure, but pretty far down there on my "greatest accomplishments of civilization" list, after democracy, basic medicine, space exploration, etc.
The general point is a good one though! It's true that simplicity is often invoked as an excuse for laziness, and authentic simplicity can be very difficult to achieve. I think that developers/designers sometimes confuse simplicity of their process with simplicity of the end result. The latter is really all that matters.