The other links you posted are better.

I think that the current progressive fallacy is the “all or nothing” approach: there’s nothing wrong (and a lot of things right) with buying some goods from local producers, and some from non-locals. Price is a good differentiator between equivalents, but often things aren’t strictly equal. An example is the butcher we use (Wasserman & Lemberger): they’re located about 65 miles away, and they deliver once a week on dry ice. But boy, their meat is fantastic, and I’ve never run across a better kosher butcher.