// //It's unfortunate that English uses "man" and "woman" to refer both to the biological sexes//
Bizarre. I can’t think of another language that doesn’t use specific words to differentiate between men and women. //
I can't either, but, as you surely knew, the sentence you're quoting went on to talk about gender v. sex. I have no quibble with using "man" to mean a biological male, but it *also* can be used to mean "someone who is seen to exhibit masculine characteristics and outward appearance", which is often, but not always, the same thing.
I have no quibble with the rest of the post, I should say, but I do want to empathise that my point was about the confusion between sex and gender, not the existence of man/woman per se.