25yr GameDev here. AI Prototype? Yes. Long-term code? Oh hell no. And this is me speaking as somebody that uses Opus 4.8 heavy all the time.

It speeds up dev time slightly. If you are finding that it speeds dev time significantly, you are 100% taking on tech debt (dare I say complete and utter spaghetti).

It generates code okay, but it does not make it anywhere near maintainable.