There is a load of videos relating to twitch council and this person online at the moment. I can see why really... Putting aside the deer thing, she holds some very extreme views about gamers and, rightly pointed out in a lot of videos on the subject, if someone on Twitch held and shared such extreme views about any other group of people they would be banned from the platform. She even made a video containing pretty much "Hate me if you like, there is nothing you can do about it!"
At first look at some of the things this streamer has said and done on stream you would think they are just trolling. Honestly, I don't think its an act at all. I really don't think its about gaming causing mental health issues but more along the lines of being bought up in such a bubble detached from reality and continuing to live your life with these views and being enabled by people that watch and donate to the stream.
Not too long ago someone that acted this way would have been put in a padded room but now its enabled under the guise of diversity and individualism along with being seen as entertainment.