I take it as a "given" that it is possible to have brain structures that different from secondary physical sex characteristics. This has been known since the 1990s. (Quick reminder: Do a web search on "homosexual + brain scan" and browse for UK medical research using Positron Emission Tomography from the 1990s.) If a person's brain has mixed structures as well, then I could imagine such a finding. However, the paywall on Metro stopped me from reading the whole article.
Yes, but + and -- during a person's younger and adolescent childhood years, it's such a confusing time for them that they can also be prompted to go in a direction other than suits even themselves, and I believe this is happening a lot these days, from a combination of peer pressure, novelty trending/social media, and the general results which are the normal response of prompting a confused person to do or believe something. Won't go into it as we've gone over this ad nauseum but I think if I recall correctly you agree to some extent with that.
Of all the people who think they're transgender at any given time, there is some % that really "are" (if you want to call it that) meaning that they will never and can't possibly ever get any 'satisfaction' unless they play the other sex - and there is some % who are simply confused and trying things out as young people do - except there are huge consequences to 'just' trying out something like this, to your mind, your soul, and of course--your body.
If we boiled down our disagreements pertaining to this specific paragraph above, it's probably just a matter of the %'s.
And it's the % that are being prompted to consider whether they may be x or y at a very young age that I take huge issue with.
It's like taking a confused person and sitting them down and saying Are you depressed? Are you sure? Are you sure? Are you sure?
I bet you could convince a lot of not-depressed people to identify as depressed after that kind of treatment. Except in the area of adolescent sexuality, it's even more delicate. A mere question or suggestion to consider something one time can have a huge impact on someone's life.