QCMBR, I have noticed that many people become agnostic after being on here for a time. this may be because during the time that they were witnesses, they were atheists all the time without realizing it or sometimes they were secret atheists and went through the motions of belief for the sake of family and friends. this latter position has a long tradition behind it. In fact it has been said that many Victorians were secret atheists but went through the motions of belief in order not to upset their families.
I believe that secret JW atheists, and unconscious JW atheists can come here and flower. Believers who want to remain believers and flower also find the liberty to do so here. think that the critical wringer, which you mention, produces results of which we often remain unaware.
Atheists talk about how becoming an atheist is liberating but imo this also can be met with a crises of values. I don't see much emphasis on and exploration of values from atheists that would resonate with people who have next to nothing. Dawkins talks a lot about how much he values life as an atheist - but he is a successful man, financially well off etc etc.