I think that most of it is due to the fact tech is mostly a meritocracy (at its best). You're either good or you're not. You aren't judged on how well you can socialize with your superiors, co-workers, clients nor does playing politics wildly affect your performance/compensation. It does but I would say less than other fields.

Also eastern culture places more of an emphasis on introspection paired with their particular upbring which typically revolves around a lot of studying, a solitary activity, I think its natural for that segment of the population to find tech to be a desirable career.

Personally if I were a woman, I'd jump into tech. I'm sure being competent and of a different gender would yield significant advantages albeit maybe soft advantages.