No, that's not it. He isn't good at articulating his points of view. He comes really close to saying something truly great, but it's being said in not the right order. I've seen this happen to him before in interviews. He has the passion but constantly gets flustered and trips over himself when talking.
Basically what I'm saying is that if this were WWE and he were Brock Lesnar, he needs a Paul Heyman to speak for him. He needs someone to convey his thoughts and actions to the public and refuses to admit it. So he comes off as childish and and rant-ish when he wants to spread a good message.
Edit: If you ever heard Timbaland or Jay Z talk about him in older interviews, they said he was like this even during his producing years. Passionate but not well spoken.