I'll break down my points to make myself simpler to understand as my points seems to have been misunderstood which is a lack of clarity on my part.
1. The author isn't a writer by trade. Just as coders develop best practices, writers do as well. It's not fair to judge the author for bias based on his writing style if he's not someone who's been trained on this.
2. It's entirely possible that this particular COO was one of many, however they were so odious as to cause a more emotional reaction, which isn't related to gender. As far as gender specific comments there aren't many one about a man and to about one particular woman. We may be more sensitive to this now as this article was written before the MeToo movement really gained stride, so it's possible we're seeing this through our current understanding without taking into account that we've shifted as a culture since then.
3. The third possibly is that there's an inherent bias. It's a possibility, but it's not a definite, and certainly even if there is a bias it didn't reflect terribly on the author as it's really minor. I have biases, you have biases, they were/are an important function in quick decision making that can save lives or not. The book "Thinking Fast and Slow" goes into this really well if you're interested.
Hopefully this clarifies better what I was attempting to address.