No, actually, the impoverished nations and groups of people support that idea to a great extent. When you are poor, the children are needed as a family workforce to handle chores, other children, etc. My sister worked in Guatemala for a time, and she said that was pretty much what the impoverished Mayan families, did. They had larger numbers of children for the sake of having plenty of kids work the farm, probably the few fortunate and literate enough had the token family “job” such as working at the hotel, that paid better, the other kids did some babysitting for the younger children and/or the farm work, and there was more besides, but there isn’t a doubt that poverty is part of the reason for having kids too.
Prior go to the '50's American families followed that model on the farms but in modern America not so much. It just costs too much to raise a child when it takes two working just to pay the bills and nothing left over for daycare which is probitively expensive now. Add to that everything has gone up in price except for gas the last two terms but that could change in no time.