The complex mechanism comes from your adherence to a spinning globe in a space vacuum surrounded by burning stars and swirling balls and whatnot.
I merely offer the Earth as the cell with everything inside it giving us what we see, hear, and feel.
There's a very good reason. It's because something is moving within and projecting that out and back to us. IN my opinion of course.
There are lots of changes to the motion. Mirroring and angles over distance to our vision create refraction and all kinds of stuff.
I've already said it's claimed to be an optical illusion but you're arguing it moving backwards.