No, it’s not a man’s world except the word ‘man’ is referring to both male and female. Check this.
Genesis 1:27-28 NLT
So God created human beings in his own image. In the image of God he created them; male and female he created them. Then God blessed them and said, “Be fruitful and multiply. Fill the earth and govern it. Reign over the fish in the sea, the birds in the sky, and all the animals that scurry along the ground.”
The passage is clear enough. God blessed both male and female and gave both dominion. He didn’t say it’s a man’s world.
I don’t know where it’s a man’s world came from. It is definitely not from God.
Our responsibility as parents is to teach our boys that the world (earth) belongs to them as much as it belongs to girls. Teach them to live and let other live. We shouldn’t raise leaders that will be oppressive.
May God help us on this journey. Shalom!