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I can at least empathize with the "ethot" guy. Ultimately having a person behind the avatar opens up the avenues for behind-the-scenes (BtS) incongruity.
Like when a niji girl says she's a virgin or whatever, most people understand it as referring to the roommate, while only the most trained schizos can compartmentalize it as "the character is a virgin, not the roommate." A vtuber can also promise (like a certain cat) that she never talks to males. Yet she does.
Such instances are misleading at best and deceptive at worst. Even if you don't care for BtS stuff, it still leaks through because vtuber talks about BtS all the time. Only a future form of AI (current ones are still inconsistent) can present a consistent form of fantasy for the imagination.