What benefit do we get from that except proper maintenance of the "us vs. them" mentality such labels help ensure? Whether your avatar actually reflects your status in active duty or not, assuming you are on active duty, do you think it's important that you describe yourself as a "female soldier" instead of just a soldier? It's the truth, isn't it? If you were a doctor, would you insist on being called a "female doctor"? Or an "African American Doctor"? It's the truth, so why not? As long as it's the truth, it can't be adversarial to social harmony, right?
Think about it.
You can't reason anyone out of a position they didn't reason themselves into in the first place.
Early voting in Georgia. On the 20th of October this old Goldwater conservative voted against both Donald Trump and Hillary Clinton by casting my vote for Gary Johnson. Neither Trump or Clinton belong within a million miles of the Oval Office.