As a 55-year-old man, I'm pretty sure I've experienced discrimination because of my age. Situations where people couldn't see beyond the wrinkles and gray hair and see the experience and skills. I know the same thing happens to women too, because they are different from the vision of an ideal employee the employer had in mind. I don't think women managers are immune to this either. I've worked in two departments headed by a woman who made all the hiring decisions and the entire team they hired was men. There are definitely barriers.
But I agree with the author that 'women in CS' programs aren't the answer. Success is. Each generation of CS pioneers includes a few more women with passion and intellect like Hopper or Bryon that cannot be ignored, and they will make it a lot easier for equally qualified women in subsequent generations, because when all is said and done, what you can do ultimately beats who you are in this field.