Didn’t say it was a good idea for a national candidate to voice that, but just pointing out that in this case he was actually right, at least in some very notable cases.
How so? Farming (mass production) takes a lot science, engineering, math and biology. It’s not a purely manual labor job. You might can say that hundreds and hundreds of years ago but even that took skills and everyone even the physically fit can’t just up and easily learn to be a farmer