One can only push that so far. If your farms aren’t capable of feeding the nation, no amount of hocus pocus will change it.
The point is that people somehow assume that we are not in as bad a shape as in the thirties because they do not see long lines in front of soup kitchens but we have millions who would be out begging for food if they were not being supported by EBT and other benefits paid for by phony money. If unemployment were calculated the same way as in the thirties the unemployment numbers would be as bad as the thirties or worse. Also we have a much tinier percentage of people who live on the land and know how to produce their own food now, I see the current system as being far more fragile than the system of the thirties. Far more productive now in terms of production per manhour but far more fragile.