[integraton]

Looking at the two additional requests, they do currently have the utmni parameter, marking them as non-interactive.

However, the top comment references Google Analytics events on scroll that don't appear to be there now. One of FastCo.Labs folks also made the following comment:

  This made me curious as well. It turns out there was a
  technical change made at around the same time that is
  going to account for some of it. We're running an
  experiment now and will update with results.

I don't see the update from him. Given all of this, I would guess that they were triggering events incorrectly and have since fixed it (the article is 3 months old).

[irollboozers]

That's extremely embarrassing.