Do you really think the proportions of that are going to work out? That laying off a thousand farm workers will somehow generate a thousand replacement engineering jobs (and that these farm workers will somehow get trained to fill them)?
We are talking 50 cents a bucket. Pennies per item. There is not a lot of room for automation to undercut.
Workers in decision making and diagnosis type roles cost significantly more and mostly only require software(not hardware) to replace. Think about how much a doctor gets paid per cancer diagnosis? Or per cancer treatment prescribed?