Thank you.
I have seen this before. I am surprised that you found it compelling.
It is a great start for sure, but there was little to report. The male people with trans identities were not shown to be female though.
There are so many aspects to be accounted for here.
Sexual orientation for a start.
"Moreover, given that sexual orientation has been reported to affect brain anatomy"
Interests and activities is another. It is very well known that interests and activities have a dramatic impact on the pathways of the brain. If someone has interests that are considered by some regressive people to be 'female' interests then of course a male brain who rejects 'male' interests will start to take on aspects found in 'female' brains. This is really remarkable that this has not been considered in this study.
I am sorry if you have believed others who have said that this study is some kind of proof. But it is not showing what you want it to show. It is a place to start, but drawing any conclusion that a male person who is trans is somehow in the 'wrong body' because they have a 'female' brain is simply false and offensive to female people.
There is a physical differences in brains between male and female people, to be sure. This also means there is differences in how the brains work because of the difference in shape, in difference in % of grey matter and a slew of other differences. But this study is not what you want it to be.