Stop using /vt/ for the sake of your own well being. You have nothing to gain from lurking or posting here. It will never help you or make you feel better than you did before you logged on. You will not gain any useful advice here. The few hundred people who use this board- and yes it is only a few hundred, many just use VPNs and bots- are not representative of the people who watch or might watch you. And when you take the well known fact that 95% of threads on any given 4chan board are made by the same few dozen people into account, /vt/ becomes an even less accurate bellwether. Most of /vt/ doesn't even watch streams for fuck's sake. The opinions you read here are almost all shitposts not even believed by the irony-poisoned NEETs who post them.
You may stumble across a few people who compliment you, which will feed your ego, but whatever good they do for your self-esteem will quickly be dashed by all the other people who will insult you from every angle, most likely just to antagonize those who were complimenting you. And as thick as you think your skin might be, you do have a breaking point. Everyone does. Whether it's the 4th time you are called a fake, terrible, person who should die or the 4,000,000th time, it will get to you eventually. Especially when- not if but when- they zero in on something you are already insecure about.
Once you've reached your breaking point, you will become hyper self-conscious which will make you perform noticeably worse on stream. Then you will begin to feel that your audience is one amorphous blob; a hive mind who share all of the negative opinions about you that are posted here. Obviously you won't think this. On an intellectual level you will know that your audience is made up of different people each with their own opinions. But emotionally it will feel like it's all one big hive mind. At this point you will either give up or lash out at your entire audience to "own" the haters; something everyone knows is impossible to do. Once you've alienated the people who actually like you in a feeble attempt to get back at the small minority who don't, you enter a state of decline from which you most likely never recover. This is not to say you should lock yourself in an echo chamber where no one will ever criticize you but as long as you make sure you cultivate a community where constructive criticism is not discouraged or shouted down, this shouldn't be a problem.
Most of all, do not try to pander to this place. You do not want an audience of people from 4chan. The type of people who use this website will take as much as they can from you and give as little as possible in return. Everything you do will be put under the microscope. And when- not if but when- they find something to dislike about you they will turn on you in an instant and hound you for as long as you continue to have any sort of online presence. This has happened to everyone who has ever tried to pander to 4chan in the past. Sometimes it's deserved and sometimes it's not but either way you don't want it to happen to you.
Sadly, you are probably already aware of everything I've just said but are too addicted to the dopamine you get from coming here to quit. I don't know how to help you with that (I'm still here after all) but I'm sure it's possible to overcome it. It's something you have to do if you want to avoid all that shit. Especially if you are already finding success as a vtuber. Don't jeopardize the best job you've ever had because you can't give up the shitposting high.