> If some toddler spends two hours on a drawing, it's a masterpiece?
A work doesn't have to be a masterpiece to obtain a copyright so what difference does it make? The point of copyright isn't to subjectively critique art.
The output is mechanically derived from the prompt. There's zero artistry or creativity involved, and despite all the posturing, those are more or less hard requirements for copyright. The prompt may meet the criteria and be copyrighted.