Well, as a thought experiment, it suggests a concrete scheme: it's a game where everybody is trying to do their best.

If it's a game where nobody cares, it's a stupid game, and results are meaningless.

Results are not meaningless if in the real world, everybody is skimming anyways.

>if you're skimming and not paying close attention

Also, if I'm drunk and reading nonsense I might not realize it.

It's a bend of the scenario if the judge is skimming and not paying close attention. This "pushes the limit".

It's a break of the scenario if they didn't go in with the goal of detecting fakery. This makes it useless as a "Turing test".

I agree with you that it brings things outside the original scope of the Turing test. I do find it interesting to observe that a metric based on casual observation can have value in a society where elections can be swayed by online fakery.