"Rationality is the recognition of the fact that existence exists, that nothing can alter the truth and nothing can take precedence over that act of perceiving it, which is thinking-that the mind is one’s only judge of values and one’s only guide of action-that reason is an absolute that permits no compromise-that a concession to the irrational invalidates one’s consciousness and turns it from the task of perceiving to the task of faking reality-that the alleged short-cut to knowledge, which is faith, is only a short-circuit destroying the mind-that the acceptance of a mystical invention is a wish for the annihilation of existence and, properly, annihilates one’s consciousness."
Sounds atheistic to me.
"Man has been called a rational being, but rationality is a matter of choice-and the alternative his nature offers him is: rational being or suicidal animal. Man has to be man-by choice; he has to hold his life as a value-by choice: he has to learn to sustain it-by choice; he has to discover the values it requires and practice his virtues-by choice."
Sounds pro-choice to me. Both of the above quotes are from Galt's speech, ergo "going Galt" does indeed translate into an atheistic, pro-choice worldview. Just like his creator.
So, have you read the book?