Yes, I believe he is the king of the south, although it may be by default. With Scarface saying he doesn't want the crown, and giving his 'blessing', so to speak...
But really it's all based on personal opinion. Some of the comments were just plain dumb...like since TI only had 2 good songs on his album (his opinion), he couldn't be the king. I could name more than 2 songs that were quality, but again...it's a matter of opinion.
I think if RAPPERS don't think TI is the king, they should do something about it. WE, as fans, don't matter in the equation. WE don't have a say in it. WE are, ultimately, just fans...
blah blah blah...