I'd challenge the person posting that to eat plenty of oil, peanut butter, dairy, and meat and then report back on how much belly fat they've lost.
I am not sure this would be the most effective strategy. Everyone is different. But in my low carbing days I ate all that (except for peanut butter, because I hate it) and I have lost a lot of weight. The thing is, as Dr. Campbell says in "The China Study" undergoing chemo therapy or taking up a heroin addiction are very effective ways to loose weight, but would you really want to do it? And how would it effect your health? Seems like it's a very hard concept for a lot of people to grasp - some ways to loose weight are unhealthy. Most people automatically equate loosing weight with health.