Its time to crush the culture of video vanity that has built up since the early part of the 20th century and replace it with more substance...it is poisoning politics (this coming from an extremely vain person :) But it won't change, the image culture is too seductive, too easy, and we all want to be seduced, or do the seducing.
Anyway, this scene says it and more. It was true in 1972, it is exponentially more true today. By the way, its the very last scene of the movie before the credits roll. Notice the fawning crowd, adoring their "new leader." or Senator in this case. Redford played a liberal senate candidate from California in the 1972 or perhaps 1970 elections, its not specified during the film.