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She was telling a story in a way that only could be done through vtubing, by using the character models, fanmade videos and pictures, the streaming software, her voice acting talent, all the while interacting with the fanbase. She was basically creating an entire narrative in a unique manner.
Was it perfect? No. Was it "repetitive"? At times, sure. The point is that she was breaking completely new ground as a vtuber, going beyond simply a "streamer with an anime avatar" into creating an actual story with lore, multiple characters and self-contained arcs in a way nobody else did.
Honestly I think that's a big part of why management culled it. It has nothing to do with their "image", this is the same company whose girls talk about drinking piss and being attracted to children. Coco shaver her cunt on stream and nobody cared. I think they stopped it because it was growing into something beyond Hololive itself. Haachama was getting too deep into her own independent thing. This is why all the lore videos had to go as well.
I mean, Hololive is doing Alt, Bloom and all kinds of shit, all the other girls are going crazy about it, meanwhile Haachama is doing a 4 person collab with herself and doesn't even mention any of it lol. I don't exactly blame them for doing this, but it just leaves a terrible aftertaste for everyone. They could have handled it better.