Yes but they show homes being built with machined lumber, glass, tractors in the field, who refined the gas for the tractor, oil for the transmission, parts for the dam thing, glass takes a factory to make, it the society saying that they will have enough left over from the end of the old world to last infinity? I don't think so.
Even in the early 1800's when every one except a select few were farmers in an agrarian society, they still all had second trades, shoe maker,tin smith,candle maker, black smith, and would trade for other goods, the raw materials came from others that mined or refined them. Unless hovah comes down here and gets off his lazy arss there is no way we can live in that type of world.
Or maybe they will say that hovah will use anti matter to keep everything going, but to a dub this is not important, only the myth is important, better to live in a dream than reality, at least till reality hits you in the ass