Wow, that's incredible. Goes to show that people do walk away from plane crashes with some regularity. My father was a pilot[0]. He sold his plane about 15 years ago (to a group of owners, one of which was a priest, I'm sure there's a joke in there). A few of winters later, he was called out to Romeo Airport; the pilot flying the plane that was formerly his had crashed the aircraft a few miles short of the runway in…
In aviation load and range are always a compromise, you can fly short distance with a higher load (all passengers) or a longer distance with less passengers. The combined passenger weight and full tanks weight is always more than the Maximum Take Off Weigth (MTOW). For example the small plane that I fly the most has enough fuel capacity to fly around 2000km, but if I will the tanks I need to fly alone, there is no reserve even for a backpack. When I took my brother for a flight around the airstrip I had 20 liters of fuel in the tanks 'cause he is heavy (for an European).
I have a couple of friends that each crash landed at least twice in the past 10-15 years; one was in the hospital once, for the rest of the incidents they simply walked. In two cases it was engine failure, in one a stuck landing gear and the hospital one had an external factor.