i believe he's referring to the type of sugar frequently found in it, fructose.
and that it isnt especially good in that it tends to be used as a source of energy for fat.
but fruit is high in fibre and many different vitamins and minerals and important chemicals we need. so i personally eat it when bulking, and when cutting restrict my intake of it to a minimum but try and eat more vegatables as a result
some fruits are also contain less carbs theen others. i believe strawberries and tomato's are low in carbs