It's no more complicated than that. Anyone who tries to find a deeper reason knows jack sh!t about women.
It has to be more than that because these days girls/women (mostly) feel cool and “open-minded” when they talk about another woman’s attractiveness. They will even tell you they point out the hot girls to their boyfriends. Then, that could all just be a front. I don’t know what it is but I have also felt, just like the author of the article hinted, that the hatred of Sarah is demonic in nature. There are many strange goings-on these days and the hatred for this seemingly upstanding woman is but one of them.