While I cannot post my sources, aparently kirsche is being shadowbanned from Phase Connect like how it happened to Kiki(it's an unwritten rule that if you mention it on any of the Phase discords, you can get banned) due their very harsh political views, another unwritten rule that is somewhat relatable is that all kind of 4chan(even greentext), KF and more controversial content is also a bannable offense there.
My theory and sources says that all started a bit after Yuri graduation, while Phase didn't prohibited people from talking about Yuri, where they do from time to time, they never did any kind of interaction with Nanobites due management orders but when Kirsche began to interact with nano, Sakana aparently didn't liked it as she was a former member and people were rrating to the point that it was making Phase looks grayish, when that happened Kirsche wasn't out right shadow banned from Phase but members were discouraged from interacting with her.
What changed from what I know was that recently kirsche began to gravitate towards political commentary, where some people is saying that she's trying to become the Tim Pool of vtubers, because of that a lot of /pol/tards joined her community and her inept head mod that lives with his grandparents and does nothing besides playing games all day does nothing about it and claims that people being openly racist and anti-semite are just jokes.
A bit of context, kirsche has a "secret channel"(NSFW), there's a few jewish people there, a few days ago one of her closest users was being anti-semite to one of those jews, he complained to the moderation team who played it out as a joke and gaslighted the guy, which are examples that made the community and streamer to be poorly viewed by Phase management