I've watched that video a dozen times and even in the heavily edited video you can tell the guy won't leave him alone. That was apparently the third interaction they had

Bart Sibrel is a conspiracy theorist, liar, and a grifter and wiki makes it sound like he had it coming. Say what you want about "patriotism" and "heros" and the military industrial complex; Buzz Aldrin climbed on top of a rocket and rode it into space and was only the second person to step foot on another celestial body. He was a fighter pilot before that and was the first astronaut with a PhD. He lost close personal friends in the space program, they all did. IMO he be allowed another jab if he wants.