Same here. I read this whole article a few days ago, and discussed it with friends. The main takeaway for me is the incredible complexity and subtlety that goes into researching the "perfect" junk food.

In particular, the term "bliss point" which seems to apply to a number of properties that food can have. For one example, a "bliss point" as applied to the "crunch" a food should have, ie the most satisfying amount of resistance for a cracker or chip to have is apparently 4 lbs of pressure.

But often there isn't just one single answer- sometimes there are multiple mutually exclusive, highly optimal combinations of preferences, as with spaghetti where you have plain, spicy and chunky. And sometimes, the most satisfying flavor preference is not the most optimal result for profitability- snacks with too strong a flavor will "oversaturate" the brain and you will not have a strong desire to keep eating them after a few samples. In these cases it's better to have a subtle taste that never leaves the consumer feeling quite fully satisfied.

So yeah. It's not really about "fat makes you fat" -- though perhaps there is an aside to that effect -- it's more about corporate junk food researchers foraging their way through a world of data on consumer preferences and designing the most efficient products.