alt Hacker Newsbecause they are just translating code (that everyone agrees is copyrightable) in a deterministic manner into another medium.
I'm not saying AI art should or shouldn't be copyrightable. One can argue the inputs into the AI generator are copyrightable, but if the output isn't deterministic translation of the input, its a different argument.
The original argument was that AI works wouldn't be copyrightable because they are deterministic, i.e. are just an algorithmic transformation lacking in creativity.