I have lived it. For 40+ years, esp in my 40s, I was invisible as a 40+ something not-beautiful woman. I was invisible. Nobody helped me in stores, even when I needed help. I was treated as incompetent, despite being intelligent, educated, and well-employed.
Now that I'm male, salesclerks fall over themselves to help me, random strangers strike up conversations with me, and I am treated as intelligent and competent. And I love it, I will admit it.
Yes, it does annoy me that women are expected to be submissive and invisible, and it pains me to watch competent women fall into that trap as well. We should all be worthy because we are all people, and it shouldn't be based on gender.