alt Hacker NewsA human wouldn't mindlessly reproduce the signature due to "not reasoning" and being intellectually lazy while doing the drawing. For the human, including the signature is more effort than omitting it; for the generative system, it appears the opposite is true. The point is to highlight that difference.
Is that a useful point though?
It's like accusing somebody of being a lousy chef because they have such terrible taste in takeout. There's just no connection between these things.