But it's also not fair to the other rappers who have had to hustle during their careers over a much longer period of time, managing career growing pains, cultural shifts, and stylistic evolutions that they've had to adapt to and overcome.
Rappers like Jay-Z, Ghostface Killah (pictured), Eminem have kept up great output over the decades, much of it excellent. They've all made some missteps and had some dud verses and songs too, but that's probably inevitable once your output reaches a certain level.