Neverminding that not all transgender people have gender dysphoria and many transgender people's dysphoria is resolved by treatment (meaning they're no longer suffering from a disorder), mental illness is also much more prevalent in gay and lesbian communities (and in fact most minorities). That doesn't mean being gay or lesbian is a mental illness but that they live in an environment that impacts mental health.Gender dysphoria is a mental illness. We clear? If a person can't handle living life without body mutilation, including the use of cross sex hormones or else they will hit self delete, they are poster children for mental illness. That's what a mental illness is. That's what a disorder is. It's being unable to live in society with your mental health condition, without treatment.
Saying that depression, anxiety, gender dysphoria is a mental illness diagnosis is fine. Saying 'transgender is a mental illness/are deluded' etc is not.