Meh. He's kinda pointing out the obvious in my opinion.
At least he's doesn't bring forward the fact that there were very few bayonet-wounds in hospitals and then say, like so many others, that this proves melees didn't happen. While it's true that few men ended up in hospital with bayonet-wounds, but that was mostly because bayonet wounds were either too insignificant to get you in a hospital, or lethal on the spot. We must remember that between being wounded, and getting in a hospital (and thus being recorded), often lied several hours, if not days - Time enough to bleed to death.
By far the least lethal thing in a battle was the cavalry sabre.