This also relates to Velasco's post regarding using the use of unscientific language by associations in public in order to wash away "stigma". Dubious individuals may use that term to describe themselves, but it is not scientific language.
What???!!! If terms like "transgender", "cisgender" or "gender dysphoria" are used in scientific texts or in official documents, they must belong to the "scientific language" category. Also, the motivation to use "dysphoria" instead of "disorder" is not only to wash away the stigma associated to transgender people, it implies that such people isn't actually suffering a mental disease or disorder. Your "dubious individuals" use such terminology because it's the best available that describes their situation. As simple like that. Also, the document of the APO makes clear that psychiatric diagnosis is a necessary procedure in order that transgender people can access to care and treatment options, in neither case it implies that they are mentally ill or "disordered". I'll abstain myself to describe your weird obsession with the issue resorting to the DSM.