Rhett Rogers quoted Naked Feminism by Victoria Bateman
But, to get the best outcome for yourself, you have to outdo other women in terms of modesty, pointing out where you are doing better, and where they have 'fallen', Modesty Is a relative thing; for one woman to be modest, another must be deemed immodest. It is one of the reasons women slut shame: to signal that they do not approve of, or engage in, immodest behaviour, taking the opportunity to mark themselves out as more 'worthy. In other words, modesty is not necessarily enforced by the sisterhood in order to 'protect’ one another, it can also be the outcome of intra-female competition in a world in which making the best of a bad situation involves playing the game.
— Naked Feminism by Victoria Bateman (Page 208)
This could be applied to a lot of things in life but it is especially obvious with this example. In order for you to be better, others have to be worse