None of the reasons listed on her termination letter are the actual reason she was fired. This is a Jap company and when you work for a jap company you do not, under ANY circumstances ask questions or criticize your superiors or the company. She pushed back when they told her not to play on her PL account and even went so far as to point out their hypocrisy. Upper management probably decided she had to go the moment that happened.
What I think is the most unfortunate is that none of her senpais reached out to her to help get her acclimated or give her the lowdown so to speak, but given the introverted nature of most vtubers I suppose it isn't surprising.
I've had my suspicions that the recruiting process for vtubers is predatory and the part where she talks about how the interview went confirms it for me.
It's like they're capitalizing on the desperation people have to get into a corpo. One thing I find somewhat insidious within the vtuber industry is forcing people to abandon their PLs, everything they worked for and built up to. I understand why they do it but if you're recruiting a 2-3 view who is going to debut to thousands, is it really such a threat to let them continue their PL activities in relative obscurity?
It seems to me like joining a corpo is really a "press the button" kind of situation, you get your dream job BUT you have to follow the companies draconian and unfairly enforced rules, you can't use your PL accounts or talk to your old community and also you have to pay for your debut and you don't get a salary.