You can't have your cake and eat it too. The entire point of AI would be to off-load the development work. You write a specification, throw it into the magic AI box, then get a working code base out.

Why the hell would you invest ten times the amount of organization work to break every feature down into small human sized parts? The AI doesn't need bite sized tickets like humans do, you can throw a complex 100 page specification at it and get out working code an hour later. But you'll get out 100k lines of code at once in that case.

You're treating the AI like a junior developer, give it tiny tickets it can work on, then let a human review the work. The human will do badly because they have no context (they'd have to read the entire specification first, then read the pull request, then try to reason about code that a machine wrote). Reviewing code is always more difficult than writing it, the writing part is easy.