[dragonwriter]

> Why is "AI-generated code" not also "AI art"?

It is, and if you did what the actor in this case did with code (tried to register a copyright on a piece of code disclaiming any human authorship and claiming an AI tool as the sole author) it would also not be copyrightable.

This case does not actually address what people are actually mostly interested in with copyrightability of works made by humans with the assistance of AI tools, where the human running the tool is claiming authorship, because that was not what happened that was being fought over here.