It is quite confusing
www.independent.com.mt/articles/2019-02-01/local-news/Being-transgender-is-not-a-mental-disorder-MEP-Roberta-Metsola-6736202978
"Standing up for LGBTI+ rights, Member of the European Parliament for Malta and Gozo, PN MEP Roberta Metsola underlined that gender identity should not be classified a mental disorder. "
"The issue is expected to be debated in the European Parliament in the coming weeks."
Meanwhile
www.dailymail.co.uk/news/article-6659503/Not-transgender-makes-privileged-says-Alexandria-Ocasio-Cortez.html
"Almost every single person this country can acknowledge some privilege of some type, you know? I’m a cisgender woman, You know, I will never know the trauma of feeling like I’m not born in the right body, and that that is a privilege that I have no matter how poor my family was when I was born"
I am not really clear how having to modify your body to match some mental 'identity' can be anything other than a mental disorder. It is not like homo/hetero/bisexuality, which doesn't require treatment of any kind.