Is the loudest always right?

As we listening to an interview of George Saunder I am reminded of a striking trend that has consumed our society. This is an idea that what is said the loudest is right and becomes popular, even if this is said without context or background information. This becomes apparent in all aspects of American media today especially in the case of advertisement. Consumers are bombarded with commercial after commercials, then by billboard ads, then even ads in newspapers and on radio station with its only reasoning behind it is that i said the most so it must be true, so it must be for you. Which seems as only a supporting effort to the declining of our nations intelligence.