You cannot derail a discussion by simply ignoring the antithesis to your argument. It is not about what people call themselves, because then we would have to consider Stalinists to be Communists (an extremely incorrect assumption). The Feminist movement often--especially in modern times--wants to preserve the idea that being Male and Female involves a specific Essentialism, like racists, that furthers the sexist misunderstanding of Humanity. Since many Feminists are post-modern thinkers, I would assume they would understand the importance of the movement's name on how people conceptualize it.
In order to change thoughts, you change words. Communism stays pure because Leninists and Stalinists were never practicing Communism, and focused on having the state; others attempted to corrupt the very concept by enormous marketing campaigns against Communism, but the very name of it (and its source) separates from those bastardizations. On the other hand, Feminism focuses on females, always focused on females, and, to this day, wants to drive a divide between males and females in order to attempt "equality." Separate is never, has never, and will never be equal, and until feminists shrug off their sexist ways, they will not be able to truly transcend and understand the oppression they are helping to enforce.
