Nice quote redaction. Tell me how hunger will be motivation for the crew that will build the assembly robots that produce the graders that clear the land for the factory that will build the thrashing machines that will sow the grain.
We already have robots building robots that build cars TODAY.
...aaaand another fine dodge. What is the motivation for the programmers that created the Firmware for these robots? At this point, there are humans involved in the development of every product. The fact that some robots can assemble some other robots -- as programmed by humans -- is irrelevant to the point. Without the toil of humans, all meaningful food production would cease. The earth cannot feed 7 billion without mechanization.
Again, if all their needs are there for the taking, what motivates these producers?