My post was deleted, so i’ll try to censure myself.
Mdd: The Chasam Sofer knew about this, so obviously there’s more to a jewish woman’ s chein than her hair. Also, a Jewish woman that shaves covers her head afterwards, unlike I’m assuming the woman you mentioned. And there’s nothing disgusting about a yiddisha minhag, even if you don’t like it.
The reason for women shaving is not because of chatzitzah but davka because the hair is part of her body, and there’s a risk that some hair may float above the water and not be properly immersed.