Nonsensical or not, the damage the weapon does to humans is clear. Otherwise, this wouldn't be an issue. Semantics aside, there's a reason you don't see gun control advocates arguing for banning single-shot hunting rifles or basic handguns.
There's self-defense of one's person and homestead, and then there's "self-defense" as defined by a lobbying group backed by gun manufacturers, "patriots", and Russian psy-ops.