She's a hack and a fraud
She lacks in timing and subtlety and chooses the most irritating and self-objectifying roles possible. Her only role in a movie is to be fat and disgusting, she does nothing else. Don't get me wrong, I'm out of shape but I'm trying to do something about it. Rebel Wilson does nothing about it because she knows no one will hire her if she loses weight, which just shows how nobody takes her seriously as an artist.
Jonah Hill's more "sensible" roles are really, really good and he's funny when he needs to be. Melissa McCarthy is funny in The Heat and alright in the first half of Bridesmaids. Rebel Wilson literally drags down every movie she's in and is usually the least funny or memorable character, probably because all her characters are the same.
Her awards show controversy is also just embarrassing. She was trying to be cool and edgy but it just came off as inappropriate, especially for the event. And even then, it's Rebel Wilson herself - she couldn't make it funny.
Hollywood, stop hiring this actress. I promise you that if I ever get into film; I will write roles in such a way that means that Rebel Wilson simply cannot play them...