The article is fine for the average joe, calories in vs calories out will make people loose weight if they are in a deficit. I think the message is distorted a little though,
MOST people want to loose FAT not just overall weight, so a calorie deficit can actually be a bad thing for some of us. I think education is on short supply in the health industry, it is very FAD driven. If you asked what most people REALLY desired they would say more muscle less fat (both male and female), to do this is much harder than just loosing overall weight, it takes a much more complicated way of doing things. But by any means it is doable, I am living proof of such a transformation taking place, but it is all about body composition for me, not just loosing overall weight.