the substance itself isnt bad but if the sides like laziness cant be controlled then its an issue. Also its good for appetite for bulking *if* you can manage to just eat the foods necessary and stay away from the garbage.
He seems to present his argument as a false choice between two extremes. It doesnt have to be either sitting on your ass all day eating junk food or taking gear at 15.
But then again I wouldnt expect a 15 year old to make much more sense if they were already on gear.