Not really. The deviousness is that Lennox doesn't come to grips with the difference between truth and workability. He says Christianity is true, but it turns out--in that talk, at least--that what he means by "true" is just that Christianity works. Is that the kind of truth must Christians accept? Do most Christians think their religion is "true" in exactly the way that could be said about every other useful alternative worldview, such as Islam, Hinduism, and secular humanism? No, Lennox pulled a fast one there, a switcheroo. He was transparent about how he came to have Christian faith, but he de-emphasized the evident problems with his understanding of Christianity's worth.
I wrote a long series about the Christ myth theory (some highlights below):
