imo, NO, It should include all humans, but In most contexts the mankind is really meant to mean men. That is because history is written by men, and countries and wealth was from men.
Not even the term, All Men Were Created Equal, means ALL Men. and certainly not Equal. The US constitution didn't treat black men equally, they were 3/5 of a man. And women were ignored completely.
The 14th Am didn't give Black Men or Women the right to vote.
The 15th Am specifically gave Black Men the right to vote.
The 19th Am, gave Women the right to vote, but that was 55 years later in 1920.
Even the Bible is confusing
All KJV books Old Testament only New Testament only Apocrypha only (?)
Thou shalt not lie with mankind, as with womankind: it is abomination.
If a man also lie with mankind, as he lieth with a woman, both of them have committed an abomination: they shall surely be put to death; their blood shall be upon them.
In whose hand is the soul of every living thing, and the breath of all mankind.
1 Corinthians 6:9
Know ye not that the unrighteous shall not inherit the kingdom of God? Be not deceived: neither fornicators, nor idolaters, nor adulterers, nor effeminate, nor abusers of themselves with mankind,
1 Timothy 1:10
For whoremongers, for them that defile themselves with mankind, for menstealers, for liars, for perjured persons, and if there be any other thing that is contrary to sound doctrine;
For every kind of beasts, and of birds, and of serpents, and of things in the sea, is tamed, and hath been tamed of mankind:
A better term that is more definitive would have been humanKind.
And even We the People is more definitive than the term ManKind? Certainly more consistent in its meaning.
del if u wish