It's kind of maddening how often blogs like this will make motions towards developing an educated opinion (citing multiple reports, researching stats from public datassets, etc.) but don't seem to have bothered to actually talk to any of the people who are invovled in the practice they describe in their post (in this case, building roads).

I mean this isn't a research article, it's some data crunching and musings on a blog. I would not expect this person to start conducting interviews for a blog post.