Exactly this. In my line of work, I have to be an extroverted feeler in order to be successful--so I fake it. It's all part of the job description for women.I tend to see more as related to biological gender influence and the various forms of socialization that women and men are hit with. This will naturally cause some differentiation. As a counter example involving gender hormone swaps, transguys I meet generally seem to have a strong assertive masculine component, but they still retain a sensitivity to relationships/emotions that is more typical of females in the culture, so it tempers them.
Same thing, I think that INTP males have a typical male bent where they just focus on the topics of interest and socially they are also permitted to let relationships slide. Western culture is not so accommodating with females; even if we don't care to invest as much relationally, typically the culture puts pressure on us to learn that, and we're forced to socialize with other females and looked at oddly if we hang with groups of males, etc. There is also the actual impact of testosterone and estrogen on the developing person, and they both have different effects on brain dev and body dev, etc. They're designed to make changes in how the organism behaves, by their very nature, and of course estrogen is aimed at nesting functions, potential child-rearing, and other relational activities.
Bottom line, I think male INTPs can end up being more "extreme" in the thinking pursuits and are also freed by society to gravitate in that direction; it's allowable to be the absent-minded prof type, so nothing stops them from drifting that way.