c'mon Habib Azadehdel aka Henry Victorian is a character made up by that guy everyone thinks made "Alien Autopsy" and Robert Irving . The UFO community doesnt even think he's real or they'd all be talking about him.Because he was 77 years old at the time, and already holding on to this secret for at least 37 years. He probably lost contact with his peers who shared this information. You tend to get an itch to spill the beans in such a situation. But he got more and more evasive later, so he probably regretted it.
He may have become frustrated with it himself. Note how he recommends to leave the subject alone, because nothing can be done about it anyway; "when you find out everything about it, what are you going to do?".
add: the mythologist is a graduate film "documentary" about Habib's life.