Because Star is the very definition of toxic cancer. A manic pixie girl that is strong and can use magic also she's attractive but she's weird so she's not attractive even though she's every teenager's wet dream also she has an oral fixation and will suck your dick whenever you want her to and can make money appear automatically...
The list goes on about how infallible Star is, which these fags justify because she was partially cucked in the second half of season two, but it's obvious now it didn't mean anything because she's gonna get a mestizo boy to impregnate her in the near-future.
Meanwhile, they turn around and call Jackie garbage for "having no character development". It's childish, isn't it?