I just see it as adding extra food I don't want or need.
From the book - Fill 1/3 of your plate with superfree foods - you'll naturally limit your energy intake without counting a single calorie......
So, the third superfree is to limit the higher density foods - as I said, adding a banana (or any other fruit) does not do this - it's adds energy intake!
Superfree should replace higher density foods, so instead of peas I'll have carrots (for example)