> "Slow carbs instead fast carbs. Consume way less sugar. Eat way more veggies."
Decent baseline advice, but it doesn't really have anything to do with "processed" vs "unprocessed" foods.
It seems to me that a lot of people equate "processed" with "contains one or more things/processes which I consider unhealthy/undesirable", which makes it a subjective and biased term.
What is your exact definition of "processed food"? If you're a raw fruitarian, you would consider anything not plucked directly from a tree to be processed. If you follow a paleo diet, you wouldn't consider butchered and dry-aged meat to be fine, but also consider bread to be processed.
Perhaps you would find more people who would agree that ready-to-heat frozen meals are processed, based on their nutritional profile and heavy sugar/salt content, but they aren't really too different from something you could cook at home in your own kitchen. The best definition I've seen is "food that is already cooked ready to eat or requires minimal preparation", but that also covers a lot of things that would be considered healthy or at least not unhealthy, such as a pre-packaged salad.
There is a lot of dietary misinformation out there, and the marketing rush to "all natural" and "avoid all processed" foods stems is also part of it.
What's your definition of "processed"?