Your question: "When atheists complain saying that the Bible was written by men, do they ever ever examine their own bookshelf? What say ye?"
Why do you ask?
Since atheists have nothing necessarily in common with other atheists except that they do not have a god schema, no generalized yet rational answer covering all atheists or even a significant number of atheists can be possible. So you really need to add some context from which your claim was constructed.
There is no connection between atheism and the question you have asked.
I have never complained that the Bible was written by humans, not some god. Yet I am an atheist.
I examine my books from time to time when deciding what to read next.
The claim that the Bible had human authors is a well founded claim, not a complaint. It is just a known fact of history. Because you have not supplied enough context regarding under what circumstances at least two atheists have complained as you have said, no specific answer is available.
Atheism is rejection of claims that there exists at least one god in the real world. Such claims are usually rejected due to lack of evidence or to failed attempts at argumentation. No one atheist has encountered all such claims due to there being just too many theist claims already and more on the way.
Theology is probably the only academic subject for which there is no evidence of that which is allegedly being studied.
• http://www.godchecker.com/
Nevertheless, culturally acquired faith in imaginary gods continues unabated.
See answer to online question, "Why do we need religion? Behavioral neuroscience and social psychology seem sufficient?" for an explanation of why that is so:
• https://answersrip.com/question/index?qid=20140506224240AAOj3JH