I've just recently started listening to his podcast (last year or so). I couldn't stand him before, but I think '13-14 he had Neil Tyson on and they spoke about the moon for two hours. Really not worth listening to, but it changed him for the better. He befriended michael shirmer, and started a skeptical journey that has been fascinating to watch. Now he's at the point of ostracizing some of his fight companions, so he yaps along because they're friends. He still holds a lot of unscientific opinions, but shows great flexibility as he holds no absolute dogma or ideology. I think that's why he appeals to so many, he can speak with the left and the right and actually identify with them morally, which is quite rare.
Also picks interesting guests, is a superb interviewer and overall a bright guy to achieve the level of success he has.