Presumably ... the problem is this is an argument that has been made purely as a thought experiment. Same as gray goo or the paper clip argument. It assumes any

Presumably ... the problem is this is an argument that has been made purely as a thought experiment. Same as gray goo or the paper clip argument. It assumes any real world hurdles to self improvement (or self-growth for gray goo and paper clipping the world) will be overcome by the AGI because it can self-improve. Which doesn't explain how it overcomes those hurdles in the real world. It's a circular presumption.