> There are also plenty of studies showing the opposite, as well as studies showing trans people being, on average, somewhere in between the male and female averages (on the specific area of the brain observed - generally different in each study!). The fact is, we just don't know.

That should have been sex-atypical differences, which would accommodate for the "in-between" studies.

Taken as a whole, the science is pretty clear, when looking at various parts of the brain, patients with gender dysphoria (both prior and after treatment) show differences from cisgender controls, and typically, those differences align with those of their identified gender.

> And that's why GLAAD's definition is good. Trans people deserve respect and fair treatment regardless of what causes some people to be trans and others not to be trans.

These two don't follow each other. Of course transgender people deserve respect and fair treatment, like all people. I just think we have to be careful when we conflate gender variance with gender dysphoria - one is a very evolving cultural concept, the other is a major contributor to suicide in transgender individuals.