I think paradoxically this podcast is so interesting because of Joe Rogan and NOT because of Joe Rogan. In other words Rogan is not like the funniest wittiest host wo gets you to crack up all the time with his talent and material. It's more like two buddies smoking weed, drinking bourbon and shooting the shit for three hours about stuff they are both interested iin like psychedelic drugs, biology, physics, politics in 2017, feminism, the Alt-Right, antifa, MMA, stand-up comedy ... whatever it is.
On the other hand let's face it, Billy Corgan, Russell Brand, Henry Rollins and people like this would probably not stop by at MY podcast, or yours. Joe Rogan obviously is a fixture in the entertainment biz for decades and obviously well connected/much respected by many.
Personally I think the FORMAT of podcasts is most fascinating. This shit is revolutionary. He gets 90.000.000+ downloads per month at times, I read. This is insane. Take one guy, interesting material, a mic, a camera and the internet and you literally can blow away any other format of this kind in 2017: no annoying producers, no censorship (so far), 100% free expression, your own material, as much freedom as it gets as a creator. And a potential worldwide audience. You can do it out of your bedroom.
This is going to be the future of broadcasting in some form or another, I believe.