“There is no knife that is more dangerous than a modern handgun; to the contrary, knives are much less dangerous.”
That is a haphazard and subjective statement. Knife injury mortality is very high, because unlike a relatively small hole left by a bullet, knife cuts can damage both surface and internal capillaries, lots of them, and all at once. And they likely produce major arterial bleeding more often than do guns.
Not only that, the knife keeps coming back for more and more, ultimately overwhelming the body with trauma, tissue and organ damage, and blood loss. Ask anyone in prison who’s survived or witnessed a shanking.