Watch his YouTube it's hilarious! Most people who are very popular on YouTube don't stream because they see making YouTube videos as more of an art. Streaming can be done by just about anyone. But to make the quality of YouTube videos he does it takes talent. He adds a lot of humor into his videos that you just can't add in stream. He would be very successful at streaming due to his humor but he has such a passion for making YouTube videos that he doesn't want to take time away from them ya no?