Yes, according to the article that kind of science (i.e. the basic logic of energy usage) was invented by Coca-Cola. This is what happens when you combine weak knowledge of science with a credulous mind (you think everything is a conspiracy theory invented by
group of people you dislike).
Maybe "processed food" (whatever that means, according to the article it is everything not produced in an "artisinal restaurant") is good, maybe it is bad but it is slightly hard to tell given that lots of people in the US are obese: which is a function of greed and laziness, not whether food is "processed" or not.
You can lose weight drinking nothing but soda. You can can lose weight eating nothing but chocolate. I have done it (and no, Coca-Cola didn't pay me). As you say, the issue of obesity is a fairly simple one of: how much energy do you use and how much energy do you put in.
What is actually remarkable to me is how many people are obese given the high basal metabolic rate of humans (at my normal weight, it was remarkably hard and time-consuming to cram enough calories in to gain weight consistently). I have gained and lost 20-40% of my bodyweight multiple times, it isn't hard, it isn't about "good" or "bad" foods (the "you never see a skinny person drinking a diet soda" phenomenom, every obese person I have ever met thought this way), and doesn't look at what their actual calories-in/calories-out is (in my experience, most people regard tracking calories this as a form of mental illness...I live somewhere that has life expectancy under 70 because of obesity...so, go figure). This isn't to say micronutrients aren't important, they clearly are...you don't have enough iron, you are going to feel very bad...but the issue for most countries in the West is excessive calorie consumption, and a failure to speak about this bluntly with people (pretty much all my older relatives have health issues caused by weight, it is frustrating when a doctor tries to be kind first rather than help them stay alive).