[klipt]

All the study objectively shows is people prefer stories they believe are written by humans.

You might find a similar effect with attractive authors vs ugly authors. If you show people the photos they probably prefer stories they believe are written by attractive authors.

If we call that bias in the second case, why not call it bias in the first case?

[EA-3167]

This isn't a study, it doesn't "objectively show" anything. It's an unreviewed discussion paper with questionable methodology.

The conclusion could just as easily be that an AI is better at writing engaging short-stories than the single author they chose.