I am not convinced that finding "job opportunities and career growth severely limited by the heavily patriarchal culture" is the same as "treating half the population as undeserving of a career".
I am not a woman in the Japanese job market. I am merely a man trying to understand how "job opportunities and career growth severely limited by the heavily patriarchal culture" is the same as "treating half the population as undeserving of a career". I see "job opportunities and career growth severely limited" for women in many industries in the United States and yet it would be silly to say that many think they are "undeserving of a career".
I am skeptical of some claims made about specific industries and cultures being much worse than others.
It seems like a different description of the same thing.