Is Google is going to stop putting ads on her content or remove her content from Youtube? I don't think that's what they're saying. Aren't they just saying they're going to stop paying her. Actually the hell of it is that she doesn't really have the choice to get her content off Youtube at all. Is she going to take her $324/mo payment stream from Spotify and use it to pay for the barrage of DMCA takedown's she's going to need to send to keep her content off Youtube?
I don't think the author here is particularly making the claim of a severe injustice. She also made no allegations of illegal behavior on Google's behalf.
I think the point she's articulating here is that she isn't a "typical" musician making profit from her music. She has hacked out a way to make money from her music that satisfies her fans and doesn't grate upon her own concious. Google has been a big part of that and now they are changing, perhaps for the better for most. But the change is unilateral and creates a personal problem for her.
Afterall, in the end she asks if anyone is starting a new streaming service, therefor leaving the implication that she is open to switch despite monetary detriment any such switch might cause.
Writing a synopsis from her perspective, I would sum up the article as, "Hey Google, I came here in the first place to circumvent the rigid and singular nature of doing business in the music industry "proper" and now you guys are injecting the same kind of problems into your own system. I have a hard time abiding that and I don't know what to do."