What you seem to be saying is that consolidation of the farming industry into fewer producers with higher productivity was good for food buyers and society at large, which might be true but doesn't contradict GP's point that when their company earns $100 more due to improved employee productivity, approximately $0 of that will be paid to the employees, so they find little reason to celebrate.

The link I posted makes somewhat different yet important points: first, the arc of automation seems to tend toward increased inequality (and a hollowing-out of the middle class); second, automation may provide a markedly worse (but cheaper) replacement for the thing it replaces. Even in the case of farming, many fruits and vegetables are less nutritious than they were 100 years ago - perhaps effects of selective breeding (such as for size, shelf-life/durability, resistance to pests/pesticides/herbicides/etc.), soil depletion, environmental changes, etc.

That was in large part due of strong leftist movements and states that forced the capitalists to share the increasing wealth. WW2 and the resulting labor shortage and other special circumstances contributed as well. Currently no such movements and circumstances exist. Globalization and the resulting free movent of capital has put capitalists in a better position to direct the extra wealth for themselves than ever before. A global movement is required to get a meaningful share of the increased surplus to the workers now, and that is very hard to do. The market will not do it on its own, as the demand for human labor eventually decreases due to automation.