Anti-Quinn feeling is built up by her simp as well, but you have done more to make people get fed up with Josy than even he has for Quinn.
The odd simp post wouldn't build up dislike for a character, but multiple posts every day makes people think "Fuck off, not more pictures of her", "I'm so bored of her now", "I'm pissed off of seeing more of her again". It's logical that the annoyance would build against her as much as against you, because it's the pictures of her that are the most prominent part of your posts, rather than your username.
You must be able to see that but yet you persist in doing it, the only reasonable explanation for that is that you want people to hate Josy, the only logical reason for you to want to hate Josy is if you hate her as well.