an article from an unreliable "news" source sharing the opinion of ONE controversial person is not enough to prove to anyone that being transgender is a mental disorder. Being transgender itself is not an illness; the mental problems come after people like you go on the internet and make those who are already struggling with something deeply personal (which is also none of your business) feel isolated and antagonized for being who they are. My tips for you: 1) find multiple RELIABLE sources before you declare something to be "proven" 2) take your judgement and hurtful statements somewhere else. The internet has enough of that already.