It looks to me like Sam Harris is getting frustrated:
In recent years, I have spent so much time debating scientists, philosophers, and other scholars that I’ve begun to doubt whether any smart person retains the ability to change his mind. This is one of the great scandals of intellectual life: The virtues of rational discourse are everywhere espoused, and yet witnessing someone relinquish a cherished opinion in real time is about as common as seeing a supernova explode overhead. The perpetual stalemate one encounters in public debates is annoying because it is so clearly the product of motivated reasoning, self-deception, and other failures of rationality—and yet we’ve grown to expect it on every topic, no matter how intelligent and well-intentioned the participants.
It’s good to know that Harris is aware of things such as “motivated reasoning, self-deception, and other failures of rationality.” It’s just that none of it could possibly apply to him! It’s something that applies to “scientists, philosophers, and other scholars.” The great scandal of intellectual life is that these scientists, philosophers, and other scholars won’t change their minds and agree with Harris.