That depends. Factory work is often attracted to a dieing town in the middle of nowhere they can scoup up cheap labor that is just skilled enough. You can only get your factory so large doing this though, but there are towns of 5-10k people that fit the bill just fine for manufacturing cheap in the US.
Yes, I’m just saying that I don’t see how that is a generalizable mode outside of that narrow circumstance.
There may be a large number of small towns, but most people and most economic activity happens in larger urban areas, and that’s what is germane to the article’s argument.
Workers who have high career capital are mobile and can generally choose where they want to live.
Nothing about this is unserious just because it doesn’t fit your worldview.