Define male: "having a gender identity that is the opposite of female".
In that case, you have defined NOTHING. It becomes a circular argument.
Also, having an "mental identity" as being something... does not make it a fact. I can identify as a dolphin. It doesn't mean that I am physically a dolphin, or that people should treat me as if I was a dolphin. It means I have a mental disability and should seek professional help.
Define male: "having a gender identity that is the opposite of female".
In that case, you have defined NOTHING. It becomes a circular argument.
Also, having an "mental identity" as being something... does not make it a fact. I can identify as a dolphin. It doesn't mean that I am physically a dolphin, or that people should treat me as if I was a dolphin. It means I have a mental disability and should seek professional help.