I took one for the team and read the whole article. It's basically trying to argue away all research findings critical of the transgender phenomenon by raising the issue of confounding. This is always a real problem lurking underneath any cross-sectional study, so on its surface I agree with the criticism. However, gender cowboys routinely dismiss the potential for confounding whenever it complicates their message: Muh brain is female I was born in the wrong body. Young brains are very neuroplastic, maybe your identity has caused these changes SHUT UP TERF!

Also, I assume everything is propaganda and always look for the poison tablet that is hidden in the meaty pill-pocket. Listen to this:

In 1993 a group of researchers at the Clarke Institute of Psychiatry in Toronto set out to test his hypothesis that beauty and what was then called “gender identity disorder” were linked. They recruited 17 birth-assigned boys with the diagnosis and 17 birth-assigned boys without it, all around the age of eight. [Emphasis mine.]

Yeah, an eight-year-old can be unambiguously diagnosed as transgender. Sure.