Well, from the page:
> openai images generate --prompt "A tiny orange robot" saves images to ~/Downloads/gpt-images/ and prints their paths, including in pipes.
That doesn't look like "managing the API". It looks like "a consumer product".
I think the real answer is Conway's Law.
AI-assisted generally means that a human is reviewing the code, though there's a lot of doubt about how well that can really be done with the amount of code an AI can output. It's generally capable of being as fast or faster than a human can review it.
"vibecoded" is also a synonim for incomplete, messy, lacks cohesion, vision. In this case, I think OpenAI partially duplicates without superseding one of the CLIs with another (and same for their different chat modes... remember they had 3 not long ago).