vj62 wrote:
As a career military and civilian pilot, I have never left a good flyable aircraft while airborne.
I would not characterize this man as brave. Foolhardy, attention seeker, dumb yes but not brave. Between leaving the aircraft and that cold, hard, unforgiving ground are many wind variables possible that could alter his landing point significantly as well as best described as an "unforeseen act of God".
If he did it all by his lonesome.
He probably used all the science of flight to figure out the jump, with all sorts of technical help. By the way, much the very same sources you used for your "good flyable" aircraft while airborne.
I would say that he was a smart jumper. Definitely not "dumb". He did hit his target.