Sex, sexual orientation, and gender are different things. By gender spectrum she means that most people's behavior is somewhere along a continuum between completely masculine and completely feminine and that virtually nobody is at one extreme or the other.
I think the point she's making is that while men and women have different interests as groups, there are plenty of women who are interested in what are perceived as masculine things (in this case probably computer programming) and vice versa.
I think the point she's making is that while men and women have different interests as groups, there are plenty of women who are interested in what are perceived as masculine things (in this case probably computer programming) and vice versa.