If you really know your Wayne history he became a punchline rapper from C1, not around the C3. And his real decline began around D4 mixtape, not the C3 (yeah he has a couple bad songs on there.).
There was a time where he had great stories, interesting concepts, real themes in bars and not endless non-seqitur bullshyt. Wayne has to be the least creative in tropes however, every rapper has them but god damn, they're incantations at his point.
Maybe that's his way of practiting that New Orleans voodoo?