This misstates the small number of legal opinions and orders on this topic, none of which form binding precedent outside the districts where the cases happened. So even if a court had found that “LLM output is public domain” (none did) that wouldn’t make it “the law” until it went up the appellate system and was upheld.

Our current laws simply weren’t built for this and I expect the legal status of LLM output is not going to be resolved until Congress actually legislates on this topic.