Works for a demo, but quickly stagnates. Future models may of course push the limits further, but right now it quickly goes sideways without someone knowledgeable at the helm.

You don't design things with never ending details though. If your developing a feature there's a limited scope to it. If your designing the direction of a large project you're working with higher level concepts.

The point is that AI is aware of constraints and can manage a round it. You've got to keep in mind the size of a typical software project and plan. Most people aren't writing a kernel. They're writing some backend tool and need a project that fits into a couple of quarters with a handful of people at most involved.