Non-supporting parents

I identify as Genderfluid and i'm bisexual. My parents know about both. They support me being bi but it seems like they don't support my gender despite them saying so. My brother is transgender ftm and they support him fully: calling him by his preferred pronouns, calling him by his preferred name, buying him transgender pins, etc. I'm glad they support him but they never do the same for me. Even when I used to be masculine leaning, they would always called me a girl and adress me by my birth name. Whenever I bring up the topic of genderfluidity, they start talking about how "everyone in the world wants to identify as something to feel special." They don't say it about me directly, but I feel it's what they are implying.