survival of the fittest, yes. Eugenics not quite. Someone who jumps onto a moving vehicle can expect to get hurt, so most people have enough common sense to do such an action.
That said, if he possessed an education higher than 8th grade, he might have lived to see another day. Unfortunately, I would bet my savings account that he did not have to do much to pass through high school as there was some inflation to pass him along, because he was such a good athlete.
Those who do not use their head, are as useful as beheaded chickens: Entertaining to watch run around into obstacles, but will not make it far before they fall.