I suspect a large part of this is down to 1. People defaulting to the nuclear option constantly, in their reactions, and 2. People not wanting to accept that some issues are complex, and that a blanket approach doesn't work. The latter of these is the real issue. People love being outraged over the lack of women in STEM fields, and how those that are are treated, but few people talk about the lack of men in teaching…
While I don't disagree with the general thrust of your argument, as an aside, the lack of men in nursing roles (and teaching, especially to younger children) is seen as a problem and when you spend time in the nursing or teaching community it comes up a lot. Campaigns to attract more men into these professions have been running for a long time. While I'm here, speaking as a townie, I don't see any complexity in the f…
If it comes up often in the teaching community, its not something which much money is being directed to, projected being run, and time being spent on. There is no political pressure to apply affirmative action, no ear marked funds in the budget, and no policy changes in order to change the dominated female culture that the teaching profession has (The report attribute the culture as a major cause for male teacher having significant higher exit rate both as student but also after they have worked a few years).
As for campaigns "running for a long time", the report says the exact opposite. It explicitly say there hasn't been any significant effort to bring male student to female dominated professions, while the opposite has existed for about 50 years. It suggest that university programs should look at the past and current efforts to bring female students to STEM subject and use it as a guide in order to create programs for gender equality which also include male students.
Personally, I think the recent decided policy by Norway is a good step in the right direction. A simple policy that dictate that minority students, that is when the gender ration is less than 20%-80%, will receive some benefits/incentives to counter gender discrimination.
(The report is 2009:7 R, by the Swedish national agency for higher education)