ATGATT?? Not for the first few years of riding....but at this point,after two low-sides and THANKFULLY Before a high-side, it is not overrated! And you are totally wrong about spinal cord injury and blunt force trauma--ATG absolutely protects against these injuries as well as traumatic brain injury.(not every time,but often enough to wear the gear)
This time last year I was in a trauma unit; the gear saved my life:no question about it.