Good stuff. I wouldn't worry about the 2 cups a day based on the conclusions in that article (at the end he mentions that studies actually show benefit to intake in "moderation.") Not sure where 2 cups falls on that scale, but it doesn't fall under drinking it all day, which is the group I think he's targeting.
That stuff makes sense for sure intuitively.
"Use what talents you possess: the woods would be very silent if no birds sang there except those that sang best." —Henry Van Dyke