So Haachama had to private her videos for the same reason we can't have swimsuits anymore, for the same reason Choco has to cover up her breasts, for the same reason the ENs have to avoid Coco publicly.
It all comes down to the same shit. Hololive has gotten too big for its own good. It doesn't stop with Haachama. Coco mentions shes also also going to have to avoid dark / edgy memes going forward. For the sake of avoiding becoming a target as Hololive grows all fun and creativity is slowly being taken away. It won't end here. This won't be the last thing taken from us.
https://www.youtube.com/watch?v=tztQkZ8gmoc 