It is a study of 14 people that self reported how hungry they were and how much they ate on their own. I don't think we can get to advice stating "most people" should do anything from that. It is an example of how bad science gets translated to bad advice and bad behavior. Not picking on you, you are responding rationally to a headline or blurb about the study. But it is a worthless study.
For most people high fiber foods are better.