The point is that it's a bad idea to pull the economic rug from underneath competent and proud but stubborn workers who've gotten used to a comfortable lifestyle given their pay. If corporations and the state are narrowly focused on cutting costs and creatively destructive "disruption" to the exclusion of all else they leave those workers with a hard landing.
That's a bad thing because, as we've seen with the offshoring of American manufacturing, it provides a ready-made support base for populist demagogues who can claim to be the voice of those left behind (even if said demagogue is a soft-handed grifter who was staked to the tune of millions by his father).
If we think the current result is bad, watch what happens over the next decade or two; that's when you'll see one of the most common jobs available in America (esp. to people with a high school diploma or less) gradually but relentlessly wiped away by self-driving vehicles. The article's description of "croppers" is applicable in many ways to today's long-haul truckers.
Some people are thinking seriously about giving them a soft landing. That's why the once-taboo idea of a universal basic income has suddenly hit the mainstream press in the past couple of years.