I recall watching a video of him perhaps 10 years ago talking about string theory. He said he was 1 of only perhaps 3 people in universe smart enough to understand it. That's indicative of his whole schtick, he's super smart- just ask him. 

Slestak_Jack

Imyourfed

science

What Is the Fermi Paradox? [Explained]

Why do you consider him a jackass? A few reasons I’ve come across are that he occasionally makes unverified claims and seems to push the narrative that the government genuinely cares about people.