This article contains important information regarding a fundamental belief of the JWs.
That being so, then why didn't The Watchtower make it a study article?
This article is just long enough to skim over while attending to some personal business while sitting down at the toilet. You can read this article and think you know a thing or two about 607 in about the same time it takes to read the Sunday comics... and you'll retain about as much of it as you do the Peanuts or Snuffy Smith.
The advantage of this is that for the average JW, who doesn't really think or study, this will leave just enough of an impression that the dub will flush away any doubts about 587 along with the soiled Charmin as they prepare to leave the room. [insert WT no different than shit joke here]
The WT date is reinforced and no dub that readily accepts "food at the proper time" are the wiser. The article is just slick enough to appear factual and well researched but when you really start to root around in it, the lipstick gets smeared off the pig.
But then again, dubs are so slack about studying, they probably could have this as a WT study and most would sleep through it.