Anecdotally, the ratio of STEM-interested high school students (even not narrowing to the socially inept) was far tipped towards guys among my peers in high school.
I was in a TIE program (tech, innovation, engineering) with about 15 other students in high school. We had 1 girl in the class... she was a great addition to the class (not at all socially awkward) and we would have liked to have more, but the interest among girls was low. The only requirements to join are pictures of previous projects, teacher recommendations, and answering essay questions to gauge interest.
All the socially awkward girls I knew of had no interest in computers... one of them went into the army, others got liberal arts degrees in college.
It's hard to draw broad themes from one's own personal experience, but I never was aware of forces aligned to tip the scales in any direction (perhaps because of my own lack of social awareness, haha).