The courts have repeatedly said that copyright only applies to human creativity. The Supreme Court explicitly said this when they refused to hear the appeal:
https://en.wikisource.org/wiki/Thaler_v._Perlmutter,_Refusal...
> "We affirm our decision to refuse registration for the Work because it lacks the human authorship necessary to be eligible for copyright protection."
So they're saying that the LLM cannot be the author, because LLMs cannot claim copyright.
The related case about patents is more supportive of the narrative that AIs cannot be authors (see https://www.cafc.uscourts.gov/opinions-orders/21-2347.OPINIO...), specifically: "Here, there is no ambiguity: the Patent Act requires that inventors must be natural persons; that is, human beings."
The patent situation is that the Act says that inventor must be an individual, which the courts are interpreting to mean a human, so the LLM cannot be named as the inventor. So, in this case, yes, this is just saying that an LLM cannot be named as the inventor of a patent. That's not the same thing as the courts are saying with copyrights.