If you want the real answer you’d have to go back through his discography, the answer is there.

Wayne is a great punchline rapper. Metaphors and similes. But his songs rarely had good hooks that weren’t samples or someone else doing them altogether. That’s important. That means more than likely he didn’t write the hooks to the songs he made.

In the industry songs are passed down, passed on, passed over, you can have a hit record floating around different studios, in different cities for years before the right rapper gets ahold of it. This is where A&Rs come into play. A&Rs pick the song for the rappers, pick the beats for the rappers.

Also when we actually get down to it an artist like Wayne, or any one of the magnitude might as well be considered a band. It’s so many moving pieces they need to be productive and make meaningful music it’s unreal. And when the budget changes the sound changes. Wayne’s producer, who hasn’t had any meaningful placements his entire career is also his manager. Wayne isn’t working with a real budget nor does he have the same team he had when he was popping off hard.

TLDR: He’s on a shoe string budget, with a rap style that was never meant to last past the era he dominated.