There's no beef. Rogan used to treat Goldy as a second class citizen cause Goldy was just a supporting commentator and Joe Rogan felt like he was superior cause of all his BJJ training and TKD history. It's normal. Human nature. So Goldly would never dare challenge Joe Rogan to a technique argument, I mean who would? Then comes Cruz with vast amounts of experience being champion, a great technical analysis and to top it off he has a huge ego the size of Tito Ortiz's head, like Rogan. How in the world can Joe Rogan argue with a guy who does it for a living and can out wit him in analyzing technique? He would look like a complete fool. So now Rogan is Goldy lite.
Matter of fact why do you think Joe Rogan invited Cruz on to his podcast? He wanted to make nice with Cruz so Cruz in the future wouldn't be so hard on him. It obviously didn't work. If Joe Rogan quits one day I wouldn't be surprised if it's cause of him.
The reason why DC argues with Cruz is because he's on the same level as him. Cruz was frustrated because 1. He trains with Stephens and 2. He's being challenged.