The parallel between vestal virgins (https://en.wikipedia.org/wiki/Vestal_Virgin) and the modern VTuber are pronounced. They're typically young women, given potentially hundreds of thousands or millions of dollars a year, and they provide entertainment for their peers in exchange for the money.
That being said, they are generally expected to either be virgins or at least to keep their relationships hidden from their fans private eyes, and when someone finds out they are sexually active adults they can lose significant standing in the community sometimes up to and including "graduation", which is a reframing of the living burial punishment of the ancient vestal virgins.
What do you think of my theory?