PBS Eons has a couple good videos on both horse evolution and domestication.

Big cat. You’re aware of the cheetah? Just picture that but not in Africa

I remember seeing somewhere that the “colloquial” usage is actually the original and that the scientific community is the one that changed it. I do agree that the evolution argument is stupid but it’s hard to blame the non scientific populace for not knowing the distinction. The evolution denier just don’t have a lot else to stand on.