In a previous life Rogan hosted a rather stupid reality show, Fear Factor, iirc. It was obvious Joe was not a deep thinker, but had a gift for gab, speaking his mind. He parlayed that into a very popular podcast where he appears curious, and genuinely common.
Perhaps that’s his appeal ?
He’s also a comedian, acted on a hit TV show, is a MMA fighter and commentator. He is kind of amazing in how well he has done in various fields.