What discredits a piece should be its accuracy, not its political leaning.
That the CIA was not created till 1947, as already pointed out by serallak, will, not stop me from adding the novel to my reading list.
What saddens is the willingness of the community to defend inaccuracy when they agree with the underlying point the inaccuracy is supporting. The author of the article could have said US Intelligence Assets, and forgone the clickbait of CIA. Putting SEO requirements ahead of factual accuracy, particularly when the fact is so easily fact checked, is not how the world gets changed for the better.