>>723639967
They only ever look good at a glance whereas human made art can have detailing and attention that will keep you interested time and time again.
The mistakes that used to shrine through were things like hands but there are still other parts that you notice a lot.
>background details don't line if something in the foreground covers them
>impossible gemometry
>attempted consistent patterns lose their shape
>both eyes don't match, have random shapes or add/remove random amounts of lashes/brows
Stuff that you might initially dismiss but after seeing it in every other image, you just want something.

Then there's other times where you notice the pose has been lifted straight from a specific image and replicated so many times that you know at a glance it's not human made without even putting more thought in.