Yes, easy to blame evil men for everything - keeping Grace Hopper from getting a job in Tech in 2013 (Assuming she wasn't dead).
In the 80's, women made up most of CS programs around the country. When I went in 2000 - they made up a handful of the entire class. But, engineering was the same (for all engineering majors).
There isn't some evil conspiracy to prevent women from entering tech (some of the best innovators in tech I know are women). They simply, for whatever reason, aren't interested in it.