> Likewise a picture of a sleeping person may look like a dead person. Stop with the pictures of dead people all over the place already!

I think a more accurate equivalent would be a widespread trend of depictions (pictures/tattoos) of people doing everyday activities with their eyes closed: surfing, winning awards, at the Eiffel tower, etc. That would certainly bother me because that is not the usual state for a waking person's eyes.

Edit: L'esprit de l'escalier moment - I should have used the arms-crossed-over-chest corpse-pose rather than eyes closed. Sometimes people assume that posture while living, but I mostly associate it with dead bodies prepared for burial.

I think the point is probably valid. I just spent some time watching slow-mo videos of Butterflies in flight on YouTube. The closes the got to the dividing line between wings approaching 90 degrees to the body, the wings were in a curved configuration. The rest of the time the line seems to be significantly slanted backwards, which does look like it's a much more natural pose in reality.