I have 20+ years of software development experience having to deal with user requests, so I am for sure sensitive to that fact! I don't think that current LLMs can do anything but the most superficial change to code. But that doesn't mean it always will, in 5-10 years, with realtime inference (e.g. 100x generations for the same prompt allowing for much better error correction) and video support, you could have a long session (say, 1 or 2 hours) of asking questions, reviewing mockups, tweaking the requirements, etc.) in order to understand the ask, and then the user will spend some time using it and testing it.