I totally agree with you. I see this "evolution" of morality in the entire scheme as a signature of its man-made origins. This is a hard truth that the subscribers to this dogma are forced to contend with, but pretend to ignore when it is called out on.
How about, rather, a story of humanity slowly being dragged out of a spiritual mud pit? It’s easy to arrogate the idea that oh, freethinkers were there all the way and made humanity evolve... nope. It was God’s spirit that led them back out, on a very rough road, after they fell.
Exactly. There's a reason "Thou shalt not rape" didn't make the cut in Moses' time.