Why though ?
even though his albums are inconsistent and mediocre to a degree, the only thing I can think of musically why someone would hate on him is is voice. its not rugged so he sounds better on certain tracks than others. other than that, he is better than probably 75-80% of these new age rappers and definitely at the head of his class. its rappers out now that are just as successful as he is if not more AND they dont have the female fans he has, yet he is much better than. I think that is a testament to them finding a core base and working it to death while he struggles at that.
again, as far as Survival, its not that this album doesnt have enough good songs to be great, it has too many bad ones.