women like Margaret Hamilton and Kathrine Johnson who worked in NASA doing calculations "Fun" fact but prior to the 1930s, quantitative work, were actually seen as "women's work" because they were good at cookbook recipes and sewing patterns and procedural things like that. Qualitative assessments, like sociology that is now considered a "dumb" women's subject, was relegated to men because their brains were sooooo superior to make inferences on human nature and philosophical ideas.

Men tend to follow the money. By the 1960s and later (era Margaret Hamilton and Kathrine Johnson were at NASA), space was a big money industry. Computer science relaxed in between then and the dotcom boom and many women were able to gain an education. Male admission exponentially increased since the dotcom boom and current tech wave.