The court in that case didn't rule on AI authorship at all.

"The coders describe an AI tool that doesn’t look up and reproduce stored work, U.S. Circuit Judge Eric Miller determined, but rather creates new work. That new work, the Donald Trump appointee said, may or may not infringe plaintiffs’ copyrights in their code, but it cannot reasonably be described as a copy of that code from which the copyright management information has been removed or altered."