The DSM-V does not categorize being transgender as a mental disorder. When you talk about the "main author saying it's a mental disorder" or "CNN.com," I don't know what you're talking about.
It seems you haven't been paying attention to the links I've provided about the author and the reclassification. I suggest you reread the thread.
To be clear (mostly for others who are reading our conversation), what you're talking about is the 11th edition of the International Classification of Diseases, released by the WHO and similar to the DSM revisions. When we talk about the ICD-11 not going into effect until 2022, we are talking about giving countries time to adopt and adapt for logistic reasons. The WHO does not consider being trans to be a mental disorder. If you want to acknowledge the above technicality, that doesn't particularly bother me. You're right to acknowledge it not going into effect until 2022. On the other hand, if you want to argue that we should look at the ICD-10 (1990) for the WHO's position on trans people because of the above technicality, that's not an honest representation of the WHO's position on trans people. The new position has been voted on and adopted, and the WHO does not presently consider being trans to be a mental disorder.
I'm not familiar with the WHO, but the article on CNN stated that transgerism isn't a mental disorder because the diagnosis has changed in the most recent WHO to now no longer being a mental disorder. If it's now not considered a mental disorder, because it previously was considered to be one then, well, it used to be considered one. Specifically, transgenderism used to fall under the "Mental and Behavioural Disorders" of the ICD-10 (1990) and no longer is going to be.
So according to the new ICD-11, transgederism is not a mental disorder.
According the the current DSM-V, it still is, but to a lessor degree.
Although, gender dysphoria describes a condition in which someone is intensely uncomfortable with their biological gender and strongly identifies with, and wants to be, the opposite gender. Some of these people may live as their desired gender, and may even seek gender reassignment surgery that can allow them to trade, for example, a penis for a clitoris and a scrotum for a vagina. So that applies to most transgender people.
Maybe I start using that term, to replace the old term, to be more politically correct, thus, that wouldn't change the fact that I'm simply calling it by another name.
So, now, to be current in times, I'll state that "gender dysphoria is a mental disorder" and that "it's simply been renamed from transgenderism to make people feel better".
Sorta like, how you don't call mentally handicap people "retarded" anymore because of the stigma. Doesn't change the fact that they're retarded.
So, you're too caught up in technicalities. Anyone who states that transgerism is a mental disorder just needs to be explained that they are correct, but they are using outdated terminology.
"Look mah, I have a red car".
- "But, it's blue"
"Not anymore, we call blue red now"
- "I suppose if it'll make you feel better I'll call your blue car red."
"Thanks mah!"