Earlier quoted context omitted.
You're confused, AI can't itself hold copyright, but the human who triggered the AI to write the code holds the copyright instead.
No the human cannot hold the copyright also. They can own the property rights to the code and protect it. It's not like the rule is "AI cannot copyright stuff but humans can" but rather code is rarely copyrighted and in its case, ownership is much more important. If your code was generated by you and you store it in your system and have property rights over it, you can enforce legal actions even without holding a cop…
If you author something, you have the sole copyright. In fact, in Germany you can't even waive your copyright away. However, you can grant licenses for the use of your work.
The difference between copyright and licenses is crucial! By licensing your work, you do not waive your copyright. You still remain the owner. If you publish your code under the GPL and you are the sole author, you can always relicense your code or issue commercial licenses under different terms.
> In general, it is kind of weird to want to copyright code. How do you patent a for-loop for example
There is a fundamental difference between copyright and patents! Patents require a novel technical contribution and they must be granted by a patent office.