The idea that foids would be able to choose who to fuck (all by themselves) is a modern invention.
Through the millions of years of hominid evolution it was Chad who chose who to breed with, and foids would then chose who to cuck Chad with (a bigger Chad).
It turns out that women who were disgusted by the touch of other women reproduced at a much lower rate than women who were open to touching other women; A pair of lesbians are often attractive to Chad, and are often socially successful because they can support each other.
Straight men have developed a feeling of disgust when seeing men-on-men homossexual behavior. Women' sense of "disgust" doesn't apply to other women, or to lesbian behavior. It applies only to men, according to attractiveness.
The evolution of this sense of disgust tells you everything you need to know about lesbianism.