Big tits doesn't have the personality to be a popular vtuber. as if she'd be able to talk about things in a fun , high energy way for hours. Very unbelievable. As if anyone would sign her up to be a vtuber when she doesn't have a fun , attractive personality.
Also, if she shows what she looks like on camera that's like the end of her vtubing career. the only audience will be people who just want her to fleshpost and only reward her when she fleshposts more and more.