It is a pretty good response. And it would apply here if he challenged Oz on anything he said.
The appearance will drastically increase the sales of his book and thats a totally legit reason to go on. I just respect him less for it.
When it comes to someone like Oz, my view is that if you arent challenging him, you are tacitly endorsing him and bringing him your audience, which makes him money, which keeps him selling woo and damaging peoples health.