I think it's very clear that people do not understand why this matters. If people consistently don't understand your cause, then it's your fault for failing to convey it in a manner they can grasp internalize.

"I'm here to save you from unfair gender association because it's unprofessional!"

Really? That's the story? That's what is supposed to persuade people to support your cause? How do you associate that with real problems? Who is hurt by this? What is the solution and why is it better? How does this help me personally, and society as a whole? Those are the questions that need clear, simple and concise answers.