Criticizing Fox News articles seems like shooting fish in a barrel. It's not surprising that such a famous source for misinformation gets science wrong, in many areas, not just this one.

There is evidence that higher fiber diets (from Oatmeal, for example) help lower cholesterol. Lower cholesterol is linked to lower heart disease and possibly longer life. While oatmeal may not be the single key to longer life, it's not all "fluff and air".