The limits of my language mean the limits of my world.
What is conceivable and what is not, what makes sense and what does not, depends on the rules of language, of grammar.
The complex, intertwined relationship between a language and the form of life that goes with it means that problems arising from language cannot just be set aside–they infect our lives, steering confusion, frustration and violence.
The same as, technology cannot progress without new terms, Internet, gigabyte, multiprocessor--the same as medicine cannot cure malaria if this notion didn't exist before--the same as you cannot travel to a place you never heard of--the same as it is impossible to ask for something without it exists--the same goes for gender.
The demand to speak equality, is simply a demand of consistency and coherence. Since language changes to keep up with reality and to allow it to progress, this should be applied to any field of human activity. Currently it applies to all fields, but gender.