Uhh, you still haven't.
He explained, in his answer to the question, that C.S. Lewis would think he's doing "the Devil's work".
Why?
Because...of the pre-existing fact that "I'm trying to undermine the basis of Christian belief."
He said, "I'm trying to undermine the basis of Christian belief. (PERIOD)
(NEXT SENTENCE) C.S. Lewis would think I'm doing the Devil's work."
What "Devil's work"?
The undermining, that he is trying for.
I never said that I've read the entire interview to get it all in context, but if you go by what's offered, he doesn't say
"C.S. Lewis would think that I want to undermine Christianity."
He says,
"I want to undermine Christianity.
THEN
"C.S. Lewis would say I'm doing the Devil's work."
See, how he specified, "C.S. Lewis would think..." right there?...and not for the first statement?
Also, his motivations are well-known, to many people, except, as it appears, Shadowboxing.
AND, I clearly posted the other quote, about how he doesn't care what people believe...which can either indicate that he misspoke in the past, or that he was being disingenuous and backpedaling with the impending release of his big movie.
I think it's pretty obvious that he is very anti-religion and was probably backpedaling.
Either way, I see no pwnage. It looks much more to me like Shadowboxing's continued problem with reading comprehension, which I've seen many times in the past...but again, I don't KNOW that, unless I hear the sentence before "I'm trying to undermine the basis for belief in Christianity."