That is one Bullshit article without reading it. Why? Because it says even decaf drinkers, so it is obviously not the caffeine but the lifestyle that keeps you alive longer... Another evidence: " Americans are drinking roughly about half of what they did in the post-World War II years when most people drank about 48 gallons a year on average, " So we drink half of the coffee than what we used to yet somehow we live longer. Maybe LESS coffeine is better!
They are implying that there is a beneficial range. That is why they said "moderate amounts." Otherwise they would have said that more is better. Too many factors to do comparison with post WW2 consumption. People may be drinking less coffee but they are also smoking fewer cigarettes and wearing seat belts and going to doctors and hospitals that have an explosive number of services and pharmaceuticals to help out compared to the years right after the war.
Funny, the timing (or coincidence) of this article...I just quit coffee three days ago, and replaced that habit with tea...and I've never slept better and felt more calm, cool, and collected, Tea centers you, brings you down to earth -- good for trading too, those characteristics,