In humans, gender is a social construct created on top of sex. It comes with a heap of socio-political norms. Some people feel that the gender assigned to them on the basis of their sex doesn't match the feeling they have about themselves or the way they would like to relate to society. For these people gender affirming language is very important to their quality of life, and their quality of life is directly tied to the well-being of their children.
> It sounds like you have an axe to grind...
Could you explain what you mean by this?