There was nothing in the clip that indicated the study title, authors, etc, that I could look up in order to read it. I cannot comment on things I have not verified. I have no clue how a "nothing box" relates to what we're talking about here.
Saying there is no significant differences between the "hardwiring" of female and male brains is NOT saying that transsexualism does not exist. If a person does not feel connected to their body, this has nothing to do with whether they like to tinker with cars or play with puppies. I also find your insinuations offensive.