Likewise, are they different enough to justify the massive disparity in nursing? As of 2011, 90% of nurses in the US were women[0]. That's even more skewed than tech. Moreover, the average income of a nurse in Silicon Valley is $100k. To my knowledge, there is no outcry or movement to bring more men into the nursing profession. [0] https://www.census.gov/people/io/files/Men_in_Nursing_Occupa...
With nursing it's very clearly a social issue. Nursing is seen as a women's job even though having more male nurses would improve the quality of health care.
There are also other female heavy professions where there it is seen as important to bring more men in to increase diversity. Generally anything that has to do with working with children (childcare, especially teaching). In education getting more male teachers, especially minority male teachers is seen as important to provide young men with role models.