Thats the dumbest argument for polygamy ever.
Those women average 4 kids each. They could have had the same amount of kids if they each had their own husband.
Why not have women have more than one husband? 2 men supporting one woman and all the kids she can pop out?
That would be great!
While in previous agrarian lifestyles, it may have been practical for a man to have more than one wife; today's consumer driven lifestyle makes more sense to have multiple husbands supporting one wife and her visa bills.