First of all, since when is sweet fruit (ie excluding avocados, olives, tomatoes, peppers, etc) its own food group? I bet he'd applaud you if you went vegetarian, though...

Secondly, since when is only eating within a ten-hour window "fasting?!" Are we really this brainwashed into shoveling food in our faces from the time our feet hit the floor in the morning until right before we put on our PJs and go to bed?! All kinds of non-dieting people already eat that way. It used to be called "normal." Let's say you get up at 7:00 am and eat breakfast at 8:00. You have lunch, you may or may not snack during the day, and then you have dinner at 5:00, and that's it. Oh, but I bet that same expert would have no problem with it if you just called it "avoiding snacking after dinner."