I see nothing wrong with the actions in the video, personally. Warning shots are great, in theory. If I feel my life is in danger by any numbered-legged critter, I’m not wasting time or bullets on a warning shot. And I’m not going to wait around to figure out of that cat is curious just to be curious, or curious how I would taste. Curiosity killed the cat, after all. Then again, I never carry a handgun around anymore. So my experience here would play out differently.
I do concur he’s an idiot for posting it online, if he’s the one who did so.