To me, that’s what makes it fun and interesting.
If I wanted to interact with a character from Cyberpunk The Matrix there are plenty of accounts out there already doing stuff with that vibe.
I get that it feels “out of place” but I guess it’s all just fantasy to me anyway so I’m cool giving it the chance to see what someone can do with it.
To each their own. I’m not saying you have to feel the same as I do. I’m just saying I’ll probably check it out because it’s interesting to me. And if it sucks, oh well, I just won’t tune in. No skin off my nose
For what it’s worth, I expect it’s not about making money off the vtuber account but driving traffic for the show, novels, and merchandise. The bulk of the anime industry is built around pushing traffic elsewhere; it’s why you see so many shows that never finish. Once they stop publishing the source material (manga, novel) there’s not much point to making the show anymore. Obviously there are exceptions for outrageously popular stuff, and shows that are fully original, but the majority is made specifically to sell other stuff
So my guess is they think they can get people who watch vtubers interested in the franchise this way, and that’s the driving force