During the University of Illinois' Bioenergy Feedstocks Symposium, none of the speakers actually said, "Corn ethanol is bad."
However, there was a noticeable subtext that advanced biofuels (i.e. cellulosic ethanol from miscanthus or switchgrass) are the wave of the future and corn-based ethanol is on its way out. For those who haven't seen these biomass crops, both look like extremely tall prairie grasses. Miscanthus grows about 10 feet tall, while switchgrass is a bit shorter.