But the key is that not all creativity can be copyrighted. Both US law and the Berne Convention (which almost all countries are party to) permit copyright only

But the key is that not all creativity can be copyrighted. Both US law and the Berne Convention (which almost all countries are party to) permit copyright only for artifacts fixed in a tangible medium, and it must be a human that does the fixing. Tweaking knobs or writing prompts before the actual fixing is done doesn't count. Selection can't be copyrighted, just as ideas and mathematical formulas can't be.