Quite simply, doctors are becoming less and less sold on statins because the benefits are not truly apparent. So our genius drug company response is to cook the stats in order to sell it to a larger population.
Yet i do not think they are placebos as they do cause changes. It is just that none of those changes are actually a benefit except as believed once the decline in cholesterol. Now we are not so sure
It is noted as well that if you take statins, you also should take a matching dose of co enzyme as this ameliorates muscle reactions.