Isn’t that just a way to average latency to match up with the other limbs? Nerve conndctions aren’t instantaneous lile electrical wires or fiber optics.
Your larynx isn’t really a limb… But nah, its an evolutionary artefact. In primordial fish it’s a straight line, but then the head moves, a neck forms, etc etc. and the nerve can’t detach and move over, so it gets longer wnd weirder.