I think it all boils down to:
There are Stevie worshippers who can't handle anything negative being said about her. I mean, EVERYBODY loves her, right?
But the FACT is that there are some people who love the band, but don't like her. I know that that seems an impossibility, but it's true.
So yeah, she might get made fun of. I'm sure the Mr. Useless thing is being blown way out of proportion, but it makes her look like an INGRATE, nonetheless, having said it.