>>85382219PHASEKEKS BTFO LMAO
With that being said, as with any product, depends on what kinda the vtuber in question is serving.
Religious beliefs aside, every kind of viewer has a right to exist and forms a market segment.
The question is then, what vtubers do that makes the product bad?
One example would be false (or misleading) advertisement. E.g., a vtuber is signaling GFE content but then starts to flirt with males on stream. It's bad business and morally hypocritical. In a sense, there's a strictness hierarchy in place. where tags like seiso, gfe, idol would put more limitations on the content, with transgressions being irreversible.
To add, the parasocial aspect isn't the only axis present. If a vtuber advertises herself as a FPS streamer and ends up not delivering, the consumers would get rightfully pissed off etc.
tl;dr: case by case, but mis-signaling to the audience is objectively bad, and it's purely skill issue on the behalf of the vtuber.