Telling the agent your high level plan that you are extremely familiar with and then having the agent execute on 2000 lines of code is FASTER then having you execute on that 2000 lines of code. There is no reality where that can be physically beaten by even someone who's typing really quickly with zero pause. Physically impossible.

Less boring or not? Another way to put it... although my answer is boring, I think I'm right. He is either a liar or like many other people lacks skill in using AI... because the transition to AI is happening so fast... not many people are fully utilizing AI to it's maximum potential. Many still use IDEs, many still interact with terminal. Many people still don't use it to configure infrastructure, do database administration, deploy code... etc.