Because it's about representation and perspective in art. You see a cinematographer's perspective, director, editor, screenwriter. You don't see that in the more technical jobs, yes more women in all film related roles in general would be great but that's not really the point of the article, is it? And I suppose it's just really hard for guys to see this but women face daily scrutiny and sexism when they take on roles that traditionally have gone to men. That's across industries. So it's not a lack of desire to do it, it's a lack of acceptance and extra roadblocks to an already challenging job that can be a deterrent.