People who refuse to think for themselves and pass on all responsibility for thought to authorities are less than animals. Animals by and large do not possess the capacity for rationality (it's rather more complex than that, but that's the simple version). Humans that have rejected their capacity for rationality are thus worse than creatures that lack that capacity.
If you possessed the capacity to think rationally, you would have understood the messages in the text. You wouldn't necessarily have agreed with them, but you would have been able to know what they were. Instead you create strawmen because it's easier than working to understand.
How, in the text, could the guard, by thinking for himself, have made a correct decision? He had no factual basis on which to judge whether Dagny was telling the truth. He was correct in wanting clarification from his superiors, who might have had knowledge as to whether Mr. Whatsispickle had in fact authorized her, and whether such authorization overrode his orders from Dr. Whosit. If this is intended as an example of Rand's philosophy (and I admit I haven't read any of her books) then I think you can get better philosophy from a James Bond book.