Any "scientist" who can say such a thing with a straight face is an idiot.
If humans have evolved less than chimps in a given timespan it's because humans were better suited to their environment to begin with. Or because humans soon started adapting the environment to fit themselves rather than the other way around. Which doesn't exactly sound "primitive" to me.
These “scientists” survive on grant money, which doesn’t come in when or if a large amount of time and sum of money invested doesn’t result in a “break-through”. Ergo, Ardi is a scientific break-through. It will be interesting to see the paleo-anthropoligist community respond to this over the next few months. These guys/gals have tremendous egos and hate to see their current and prevailing theories edged out.