Yes and it is something progressives and feminists take issue with. Most societies today are still sadly male-dominated and our language, vocabulary and the way it's used could use some equilibrium. We've come a long way since http://en.wikipedia.org/wiki/The_woman_question but clearly we've not come all that far.
Dear god.
It isn't mankind because of men being 'superior' it's probably because according to the bible Adam was created first.
And do you really need to have all terms gender neutralised? Women have proven sixism is baseless with their actions.
Language isn't "Male dominated" and no-one uses mankind as a sixist term except for feminists.
Women have pretty much equal rights in general society, and many are in positions of power, but just because there has never been a female president doesn't make America sixist. The best
man person for the job should get the job.