@BrianHjelleVirologist They might think that, but they'd be wrong. The velocity leaves a crater of an exit, which means that you're going to lose a lot of meat if you don't have a perfect shot. And, the range is not great. Especially if you're hunting out west, it would be tough to get close enough to get a clean shot without spooking whatever is being hunted.
Your theory holds. Anyone bringing an AR-15 to the field is likely an idiot who's going to end up shooting someone.