Indeed. I thought it was all directed at convincing their own doubters, e.g. the spectacularly awful Arguments from Wishful Thinking Because Modal Logic!! of Plantinga - the stuff is so trivially bad I could see no other use for it. Then an acquaintance who just happens to be an atheist philosopher doing a Ph.D in parts of Plantinga's work that don't suck (apparently there really are some) said no, Plantinga really does write this unbelievably terrible shit for an intended audience of professional philosophers. So, um, yeah. All I can think is that they write this stuff to convince themselves, and they're so pleased with it they have to show the world.
These are written from the angle that Christians deconverting is bad.
Cognitive reasons
Breaking up because a relationship with God becomes unworkable
Leaving because other Christians aren't empathetic about doubt
At what age do people leave?
It looks as though there may be more articles in the series.