His initial premise is so damned stupid that there's probably nothing to salvage so I'm not reading it. He gives zero credence to the idea that whatever metric he grabbed for men should be a linear correlation to IQ might... not be? Then ploughs on with an explanation that allows him to do Trans discourse. Fuck off with that.
Here's an alternate theory: you only know about out trans folks. Trans folks will only come out if they think they're likely to not be beaten to death. Therefore you will see more trans folks at IT jobs and fewer at construction sites, because IT workers sit in chairs all day and many couldn't beat someone to death even if they tried. Plus having lots of money helps insulate you from the risk of ending up living on the fucking street. Seriously if this guy just thought about it for like ten seconds he'd realize his data was skewed.
Also, anyone who's ever experienced being a teenage boy probably understands exactly how dumb Testosterone makes you firsthand, complete with specific stories.
Rhysider's editorial comments come off a bit naieve and even a bit childish at times. His good attitude is sort of infectious though.