Well then, where is the show of causation of the huge birth rate of Mexico (7 children per woman) leading to an economic boom compared to the economy of the USA over the same time period?
Or any huge birth rate being associated with any economic powerhouse modern nation?
Correlation is not causation - but there is an obvious and overwhelming correlation between nations that are basket cases and super high birth rates.
While the super low birth rates of moribund socialist states are to be avoided - I fail to see the appeal of the ultra high birth rates in any particular real world example from any nation within the last hundred years.
You've got it 180* wrong.
Modernization leads to decreased fertility rates. Countries that modernized were economically successful, and their fertility rates declined.
Agrarian cultures are not often economic power houses, and their fertility rates decline much more slowly.
Modernization and economic success leads to diminished fertility rates. High fertility rates do not cause economic depression. They are simply vestiges of agrarian societies.
I fail to see the appeal of the ultra high birth rates in any particular real world example from any nation within the last hundred years.
Straw man. No one is calling for ultra high birth rates.