I was just handed a 10 day suspension for saying the same thing. There ARE NOT many genders. There are EXACTLY two genders. There are many psychological disorders. Facebook (and apparently Twitter) hates when you tell them that.
There are two SEXES. Living things have a SEX.
LANGUAGE has gender, most having three and ONLY three: Male, Female, and Neuter.
Don’t use their terms, it strengthens their argument!