From one perspective, I can see where you are coming from. Many posters do seem to "pitch" atheism, (even if only by inference), to newbies from the start. I would agree that is not necessarily productive. Although I myself came to an atheistic conclusion several years ago, I certainly did not get there overnight, immediately after leaving the WT. It took research, some practical experience, and a long meditative process to become comfortable with that conclusion.
There used to be a really good ex-JW information site called "Beyond Jehovah's Witnesses" that was ran by late Timothy Campbell. Although an atheist himself, he recommended developing a temporary philosophy of sorts upon exit from the WT, one where a person allows themselves to take in information and not commit to a "belief" system, (yes, I know many atheists will argue atheism is not belief; I am not debating that here, so don't). I found this to be an effective method of development post-JW. There are no shortcuts after leaving years of ambient abuse from a system such as the WT.
As far as this site is concerned, I think what you are seeing is a microcosm of some of the changes in society in general. I remember 10 years ago, we had a lot of born-again types here, I think mostly influenced by Randy Watters' Freeminds site. Although Freeminds proved to be a treasure trove of good information I eventually used to draw a conclusion against bible belief, it clearly had a Protestant born-again bent, reflecting the beliefs of its owner. Today, most people are better informed, and once turned off from one religion usually know better than to jump into another one. There are much better sources of information today available than the Freeminds site. I think this leads many to an atheistic conclusion much faster than even in relatively recent years past.
d4g