I would have thought his bibliography more substantial. But then perhaps the purpose of the stack is only to pique our interest not convert us wholesale. By today's multimedia standards, Vegie Card is a pretty crude interactive educational program. He could clearly reach a much wider audience with his message of moderation. I think not.
Habits are, after all, very hard to break.
He has, however, raised my level of consciousness and shown me that vegetarianism can be a viable dietary way of life. I now eat far more green vegetables than I used to, far less fat than I once did, and more fresh fruits than every before.