There are still machinists doing things by hand, but for real production or prototyping, most will now use a 5-axis CNC machine. It still requires an operator of sorts, but much of the work that once required skilled manual machining is now done by CNC.
I think the same thing is happening here; it’s just that the transition is messy.
Give it five years, and how we get to the end result will not matter nearly as much as it does now. A messy codebase will be irrelevant, as it will be something managed and controlled by the LLM, written in a way optimised for itself, not for you or I.