> now we know that I could simply keep cooking the meat for longer
Cooking longer at the same temperature is also pretty much exactly what the experiment in the article was, which found no statistically significant correlation between testing and juiciness.
The experimental group pork chops took less time from when they were put on the skillet to when they were cut (and when they would have been consumed if they were cooked by someone making a meal for themselves).
You're welcome to disagree, but the facts disagree with your stance.