Are we sure the image is not upside down or back to front?
It's probably not back to front, as the image comes from an audio transmission. So the first things it "says" are the first things in the image, time-wise. .counterproductive be would that then communicate to trying actually it's if but backwards talking be could it theory In
On the other hand, I think it could be argued that the image is meant to be displayed top-down. Left-to-right is about as arbitrary as right-to-left if you don't have hands. And working with the audio software it's natural to display it that way because our monitors are wider than they are tall. But from the perspective of an non-human entity trying to communicate, then top-down might be a more natural way to go, ala how the Arecibo message is displayed.