Vei leaving made the most sense. She's tried her hardest to separate herself from normal vtuber fans, and has cultivated a community that doesn't care if she says retard or insults vtuber culture in general. She's also dating one of the owners of OTK, so she doesn't really have to worry about becoming irrelevant or ruining herself financially.
https://www.twitch.tv/videos/1968629258?t=01h06m07s 