I'm a gender non-binary nanny that is often read as a man, and I definitely see this stuff. It's always a little amazing and dehumanizing, definitely. I don't call it sexism, though. It's all rooted in patriarchy.
Sorry this indentication confuses me and require clarification.
You are indeed a gender. Everyone is. Non-binary as in your not made of numbers or sequences? Often read as a man. If you are non-binary doesnt that mean you cant be read because you're not sequenced? So how can people read you? As a man at that. Do they try to read you in a mans voice or with an actual man present.
Tbh the only thing I understood is Nanny. Which is a job title or often a title for a british grandmother from a grandchild. I assumed job title because by statistics of probability you are probably not a grandmother.
For comparison, here is a statement I believe is equally confusing.
I am a human, of the being variety, from the demographic of mankind which is not a dirivitive of womankind or trankind but a whole. I breathe. Holding air indefinitely. My brain works on inconsequentiality. I am. Danger is roostered in risk and cause. It does not indeedly finely define my causality which is true.