Thing is that, in twitch, you can make the chat be used by "subscribers only", and those who donate get to write messages that appear prominently.
In this particular case, She might be acting knowingly annoying just to get desperate mad people to spam hate comments on the chat, making them pay the subscription price, at least. If you look at the chat in that video, she doesn't put any effort in moderating anyone, no matter how offensive they are being. I'll take that as a sign.
My two cents as someone that has a bit of experience in the trolling department.
“Simple minds have always confused great honesty with great rudeness.” - Sherlock Holmes, Elementary (2013).
"Did you guys expected some actual rational fact-based reasoning? ...you should already know I'm all about BS and fraudulence." - FunFan, VGchartz (2016)
