Whoever was narrating also misdiagnosed the problem. She said "all the fats and sugars" we consume are the problem, which isn't specific enough.

Animal fats and certain plant oils (like olive, coconut, and avocado) are healthy, and are now incredibly rare in Western foods. Pretty much all the other oils (like canola, "vegetable", soy, peanut, sunflower, etc.) are really bad, and are now used almost exclusively in all Western foods.

Also, it's been known for a while now that the sugar industry paid for all of the initial studies to demonize fat (back when we used the healthy fats).

I'd also like to add that not all sugars are the same. There is a distinct difference with how the body reacts (initially and over time) to different types of sugars and carbs. There's clearly something different about the specific and highly processed sugars and carbs the "West" is using that's causing this.