This is actually a well thought out reply. What people do not seem to get is that nobody is disputing the well known fact that human females don't carry male genitalia. What is the subject of this dispute is whether it is possible for gender to be different than biological sex, as in psychological vs biological. That seems to be the case, at least in my opinion, which is why I advocate for the rights of these people. The best treatment for gender dysphoria known to mankind is sex-reassignment surgery. Gender dysphoria absolutely is a disorder, where we differ is in the approach we'd rather take to treating it. It's a complex debate, but I often see people conflate gender dysphoria with other sorts of issues, like "how many genders there are". In my opinion, there are two broad categories: people who identify as "males" and people who identify as "females", and the outliers, who most of the time identify as neither, or perhaps both, at different times or at the same time. This is a very small percentage of the population we're talking about.