while cliché it is spot on. technically insulin is the most anabolic hormone that the human body produces and that being the case having chronic low insulin levels keeping the body in an anabolic state is optimum for muscle growth. supplements are that hence the name, they "supplement" the whole food intake.
William F. Buckley describes a conservative as, "someone who stands athwart history, yelling Stop." - and then proceeds to drag civilization back to times best left in history's dungheap.