No, that's not what I said.
I'm saying that you're thinking far too much within the context of ritual animal sacrifice within the context of the Torah accounts. Step out of that context, and consider other reasons others might practice this, and in what forms. It's going to look very different from place to place.
As far as I can tell, pre-Christian European cultures didn't really have the concept of "atonement with the Gods". We ritually sacrificed animals in some kind of celebration, shared part of it with the participating wights (whether Gods, Elves, or whatever else), and ate the rest of it.
That's just one pan-culture from a relatively small and historically backwater part of the world. Notice how different our context was from ancient Hebrew or modern Kosher practices, and then consider how different it would be across the entire world wherever it appears (because far as I can tell, it's hardly a historically universal practice).