Sugarless Kelloggs don’t exist. Bare raw Corn Flakes are 8.4g of sugar per 100g. (Still better than “nature yoghurt” with 11g per 100g, knowing that a yoghurt is 125g).
For comparison, 100g of apples has an average of 10.4g of sugar: https://www.fatsecret.com/calories-nutrition/usda/apples?por..., and something like fruit loops is 30g of sugar per 100g (https://smartlabel.kelloggs.com/en_US/Product/Index/00038000...)
I see the typical American quest to eradicate (fats, then cholesterol, and now sugar) annoying.
Sugars are bad in that we only need so much of them and our brains are hardwired to be addicted to them/want more. Sugars from fruits are absorbed much more slowly than refined sugar.
Fats, sugars etc aren't inherently bad, there are healthy fats. But the main learning today is really that it's more about caloric intake (energy in, energy out) and it's easier to manage when fats/sugars & other carbs are delivered with foods that digest slowly/have a low GI - making us feel full for longer; it's better that our blood sugar experiences a constant slow release than spikes.
The problem is when we refine sugars & fats down and sprinkle them over _everything_ because "it tastes good". I can't believe American bread often contains a buttload of sugar. It's bread, not brioche!
Milk also contains slow-ish sugars, not refined sugar.
No. They might be 3% sugars, but near entirety of corn flake is carbohydrates