But what he is trying to say is you don't need any fancy rules except for:
>> Yes, eating lots of carbs is bad for you. So is eating lots of fatty food. Or lots of anything. Just eat lots of green stuff, and make sure you get adequate amounts of protein & carbs. To lose weight, make sure calories in < calories out."
By agreeing with him, you have to come to the conclusion that following the above advice is what makes any diet good. There is nothing "unholy" about grains. I believe that was the point nqureshi was trying to make.