I would not be ok with someone saying I'm not a woman not because I would get a mental breakdown over someone acknowledging something that I'm desperately lying to myself about, but for the same reason I would not be okay with being called a sparrow, or someone calling my dog a helicopter, or claiming we live on Mars. Because this is false, and there is objective, conclusive evidence that proves it is false.

Additionally, there is an additional problem when falsehoods are pedaled for the sake of a damaging agenda. So, for example, if someone insisted that COVID is fake, or that the Earth is only a few thousand years old, this goes beyond just a mistake, or a silly misunderstanding, and is falsehood motivated by ideology. In the same way, a person calling me some measure of not-a-woman because I don't match their misogynistic ideas about women isn't just saying something that isn't in line with reality, they are also directly expressing their toxic ideology by doing that, an ideology that is rooted in the idea that a woman is a fetish, or an ideal in men's heads, or someone who plays with dolls etc.