Sex appeal is a feminine symbol of power because in nature women are the gatekeepers of sex. Femcels feel powerless because they have no sex appeal and as a result can't relate to characters like Nami, which is why they want to uglify all women to bring everyone down to the lowest common denominator.

Feminine beauty has also been traditionally upheld in art for a long time, and one of the major pillars of cultural marxism has been to undermine and destroy western civilization starting with its traditional values.