For statistical purposes maybe. But then #gender is much better as male/female is to much black-white-looking. Okay, currently I use it in mails to greet the user: "Hello Mr. John Doe, bla bla foo bar."
You're welcome, sorry if I came out a little dry, this is an issue that recently and unexpectedly became close to me and I still have trouble processing the anger regarding the current injustice/ignorance/rejection towards wide-spectrum gender.
Sure, that is why I don't like male/female-thinking as it is to much black&white. And also that is why I like #Friendica as it shows tolerance (it origins from Latin word tolerare : https://dela.dict.cc/?s=tolerare ) towards many other genders.