Unless you know someone personally how can you ever determine that?
I know a guy that he and I are mutual friends with a very loud, brash, outspoken sports personality here in Pittsburgh. I once asked him "That's all just an act for the cameras, right? I mean he can't really be like that in his day-to-day life, can he?"
My friend was quiet for awhile, appeared to think about it a bit. Finally he said "actually what you see is sort of like his real personality on steroids".
Which is frankly a horrific thought.
I do know that radio people here in Pittsburgh who worked with Limbaugh when he was a young DJ
recall that he was a genuinely kind and decent individual.
I've always wondered that about Michael Savage. I assume Alex Jones is just the same in real life, but Savage's shtick sounds like an act.