I actually love this question .. I've been thinking about this a couple of days ago
and I think that some artists just have normal ' fans ' like '' I like this song by _____ '' but not like an actual solid fanbase .
I don't think that Jessie has a solid fanbase , I don't see people having her in their twitter username (s) .. etc.
She might one day though .. she's talented but too mainstream and she'll only have temporary pop fans for now .
She has a nice voice, but there is something annoying about her. My answer is no. But if like her, then you shouldn't care about other people's opinion.
Annoying? Like what, out of curiosity? But yeah, totally agree!
But srsly, I think her music is terrible. Even the songs that have potential are marred by her ear-hurting vocal acrobatics, IMO. She's pretty bland and devoid of her personality too.