This isn't true. The majority of agp trannies and many ftm tannies are actually above average intelligence. You have to be really in your own head to trick yourself into complex delusions, it's a qunitisennential trait of a midwit. Dumb people just think "yea a woman's a woman, stop talking to me weirdo".
They aren't smart, IQ doesn't relate to smarts. IQ (or more correctly said EQ) doesn't correlate to a ratio of more than 50% on tasks similar to it, with lot's of failures and problems on these tasks.
The reason IQ relates to the SAT it's because it correlates to education around mathematical logic (which can be learned by the simple fact of learning how to use modern day math, which is just the activity of making instinctive math into a text format), vocabulary (which is education), some small parts of problem solving (which uses educative contexts) and things which need the understanding of metric definitions which are given at school.
Even the most fervent defenders of it say there's a correlation with education, even if it doesn't correlate with things like brain function or reaction (which again, can be learned, it's low correlation relates to the relation of most humans having 250ms and practicing to 200ms, thus 20%, even more when this depends on a lot of factors, increasing on old people where practice has a more important aspect around reaction time), this is the reason IQ correlates to a 100% to years of education, why it isn't less of 80 on all countries on real studies, why there's dudes who do shit choices even with a high iq and why it doesn't correlate to a physical aspect, why the test looks like a text you do at school and the reason they use two data points or less to correlate (which again, it's flawed, real studies, not psychology or clinical psychology (same shit), use 6 or more data points to correlate, having less means that you are doing statistics wrong or you are doing the study incorrectly), why people stop increasing their IQ after the final school years (18 and 25 years) and why the test shits the bed after a 100.
A high IQ (EQ) knows the rules, so it knows how to break them, a low IQ of around 80 to 100 (normal levels, less and it's real retardation or extreme malnutrition, 75 iq for example, africa has 81 iq to 84 iq on the more recent studies) doesn't have an education, so it will say the obvious shit like a woman not being a man. It's the over socialized midwit or delusional high EQ who will do false connections with his over education to lie about reality, he doesn't want to accept it, even if he knows the truth, so he closes down and tries to lie constantly to not recognize his own reality without any socialized aspects, always mantaining in a delusion which represents his destructive tendencies.