This.... is incorrect. Generated code can and has been copyrighted, but not by the model generating it. Humans can get copyrights, digital entities cannot (nor can your pet monkey.) Now, can a human copyright code they did not author? Yes, absolutely. Courts only care that a human had a hand in as little as refining the output or making selections for the agent. Copyright claims look for exercised creative judgement and infringement on existing copyrights.