I respectfully disagree! Most any neck shot can be fatal....eventually! However, unless nerves or a major blood supply is destroyed, an animal can go a long distance in the time required by the hunter to get to the site where the animal "was"! On many game animals, the actual area of near immediate immobilization or death is actually fairly small in relation to the mass of the neck.....especially so, with an elk!
Properly placed....it makes for a great photo op or bragging rights around the campfire. Poorly placed, it may lead to a long, lingering death of the game animal!
My wife, as a meat hunter, was a huge proponent of head shots. And I witnessed her make several pretty impressive shots. However, she changed her opinions of head shots after killing a deer with a head shot, taken on a deer lying down in the sage brush. Her shot was immediately fatal. When we got to the kill site, we found that the deer had been previously shot through the jaw. Field dressing the deer indicated that the deer was completely dehydrated, it's intestines flat and completely void of food or water. How long had this animal suffered prior to her killing it.
She no longer makes head shots!
A lung shot offers a much larger kill area, room for error....should the animal move or the shooter make an error! A lung shot animal will likely travel a short distance, but a lung shot with an adequate caliber/bullet is almost always fatal! JMO memtb