I don't get the conceit of Vtubers. If you want to go fantasy and have an anime waifu why not go the whole 9 yards and just daydream up your perfect fantasy girl thats compatible with you in every way, has unlimited time for you, won't charge you money, and you don't have to have a parasocial relationship with? If you want a real person why not go the whole 9 yards and get a real relationship? If that is off the table why not at least get confirmation that the chick is actually a hot girl? If you're going to pretend they are and don't really care. Why not pretend about all the other stuff too?
Its just a weird mixture of two opposing things with none of the benefits.