I was interested and based on this https://truewestmagazine.com/animal-cruelty-in-movies/ It seems that it wouldn't cripple a horse when "done right". Problem is that it seems a lot of stunt unit director didn't do it right.
Interesting aside about Errol Flynn raising the issue of animal cruelty.
I know. And I think it is interesting to look at how much that costs compared to what we do today. It surprised me that animals aren't that expensive, I would have guessed that killing horses would be way more expensive.
No it doesn't, it costs a few thousand dollars. Even if you killed a horse every minute in an hour long episode it would just be in the six figures, which isn't much for special effects heavy tv-show today.