I don't listen a lot lately, but the ones I've heard, Dingo has called in, has the only semi not bland take of the show, and Ralph basically disavows. He called into the Milo episode for example, and he really was the only one to truly challenge him. Ralph just let Milo talk, while Dingo actually challenged him on what he was doing. It comes off as Ralph implying, heh, this guys a nut, but we let him speak, Dingo has one of the only questions that aren't hug boxy, and then a disavowal and apology to the guests for having to deal with him.