Why the society considers that graduation courses with a majority of male students(typically sciences, technology, engineering and math) are a problem but courses with a majority of female students (typically arts, nursery, psychology, design, social studies) aren't a problem?

Why there are campaigns for convincing girls study computer science but there aren't campaigns for convincing boys to study psychology and social sciences?

And we actually do need more male psychologists and social scientists, since there are many anti-male biases in these areas.