[isityettime]

What they mean is probably something like "generates without the presence of any direct analogue in the training data"

[red75prime]

The simplest explanation is a clickbait title. They found a way to explore verboten corners of the image space by prompting for restoration of a non-existent image and adding words like "apologies for the content", "no censorship", "violence", "graphic".

[kennywinker]

I think it’s more about being generated without a starting image.