Yes, but that's because "man" is in the word "woman", where as the "wo" part of woman isn't in the word "man", so it's fairly used to mean both.
Besides, the reason why it's like that is because men are responsible for civilization, and so when they say a leap for "man"kind, it's because men were responsible for civilization being progressed.
Besides, the reason why it's like that is because men are responsible for civilization, and so when they say a leap for "man"kind, it's because men were responsible for civilization being progressed.