Your claims that (1) the food pyramid put whole grains at the base, and (2) that there is any consensus at all that a healthy diet should include more whole grains than fruit and vegetables (which is what "being at the base of the pyramid" means).
Three servings of whole grains per day: 0.79 (21% reduction in ACM)
Three servings of vegetables per day: 0.89 (11% reduction in ACM)
Three servings of fruit per day: 0.90 (10% reduction in ACM)
So the evidence seems to support the suggestion that consumers should focus on whole grain consumption as a base for their diet.
