All Tay is saying, that when you separate Yuk from his music, the guy just isn't all that. You don't have to have inside knowledge to figure this out - since he first came out way, way back in the day he has been picking fights / had beef almost non stop. If you watch his videos, it's pretty obvious why - little guy, very talented, huge mouth, even bigger ego. Obviously it offends Tay that a self absorbed guy that can't even keep his friends on his own team is claiming to be the ruler of something Tay, and some of the guys that Yuk has burned in the past, played a large part in helping create.
Tay isn't hating, he's just saying that some people need a reality check. Yuk is a very skilled rapper, not a very skilled gangsta, and not a very skilled business man. Anybody with any common sense can look at his career and deduce that. Doesn't mean Yuk is a bad guy, bad person, or anything like that - just means he should probably check himself before he wrecks himself, for good.