>>12446967It's true that her past antis and dislike of her content or voice are part of it, but that's not going to rise to the level where it is now on that alone. There are a couple things that she does that fans of hers barely notice but draws other people into a frothy rage.
One of those is a desire to take credit for things and self-promote. To them, this shows a lack of humility and desperation rather than being proactive about making sure she's doing it rather than risking that no one does it for her.
The other thing is her tendency to talk about what is upsetting her in public, which leads to accusations she is whining or feeling sorry for herself. But because drama is this board's crack cocaine, they pick up whatever tidbit she drops and make a new thread about it so it can be amplified by gossip. But beyond alienating a portion of the fanbase, it hasn't seemed to cause any problem with her coworkers or bosses, and in some situations it's seemed like she's been chosen as the mouthpiece to speak for the group. But if a vtuber fan thinks, "you should never talk about any of that stuff in public", they are a lot more likely to hate her.
That's all I can think of at the moment, being as general as possible.