I think he was referring to the ability to go from A to B within a certain amount of time. There is a threshold at which it is possible for a car, yet impossible for a horse and buggy.

That said, I recently saw a colleague use a LLM to make a non-trivial UI for electron in HTML/CSS/JS, despite knowing nothing about any of those technologies, in less time than it would have taken me to do it. We had been in the process of devising a set of requirements, he fed his version of them into the LLM, did some back and forth with the LLM, showed me the result, got feedback, fed my feedback back into the LLM and got a good solution. I had suggested that he make a mockup (a drawing in kolourpaint for example) for further discussion, but he had surprised me by using a LLM to make a functional prototype in place of the mockup. It was a huge time saver.