I did watch it. Animals are killed by destruction of vital organs, absent tracking the damage the film becomes less meaningful. True whether we are using a .378 Weatherby, or a .223.
Not much on .224's for more than gophers, but this would appear to be range more suited to a hyper velocity .224.
I can tell you first hand about a very large man, in heavy winter clothes, dropped in his tracks, with a non CNS hit at 3x that range. Doesn't validate that as a choice absent some anatomy, and physiology.