Kanye's beats are easily the best beats in the business. Sure, sometimes they just sound like other songs from the '70s pitch corrected and with a drum beat, but they are still dope as well. I trust Kanye's judgement because Kanye takes risks. If he says he threw some kazoo on that bitch, you better believe it's because it works. He could record the sound of him stepping in dog poo and make it sound good over some pitch corrected Temptations song.
You don't hear much from the kazoo, do you? It's not much of an instrument. It's more of a kid's toy at this point. It's like one of the prizes you can exchange a few tickets for at an arcade. Isn't that an issue when there isn't a big difference between a professional kazoo and one you can get for six tickets?