How is that different than a human writing the code? Whether an AI or a human wrote it, I would expect the same bar of validity/maintainability.

To me, SOTA is just bad at DRY, KISS, succint, well architected, top down, easy to test code and has to be constantly steered to come close. Even the article suggests that. YMMV.

Because humans make design decisions, AI just bangs it's head against the problem until it gets something that "works".