Though it is tongue in cheek, the flow chart is still deficient in that there ought to be an arrow between the box “ONE” and “DO YOU WANT TO BE REINCARNATED?”
But in any case, no, people do not generally chose their religion wisely. They don’t even choose, really, but sport a shadow of something mistaken for choice. This happens when someone of any faith is cradled into it (Hi there! Yes, probably you!) and later uses the habituated internal “logic” of their own religion to verify for themselves that they are already right. Their religion says so. Why look further. This especially and most delusionally applies to fundamentalists of any stripe.
The usually and most common change in “choice” is the choice to not participate because of unmet needs or expectations of the fallen away believer. Many of these still fill pews.
In relatively rare instances an individual will have some sort of awakening experience and question their faith, and may even change it. But they question their beliefs in terms they have already learn to frame the question in, so basically nothing is really changed, even if they adopt, say, Catholicism, having been a Baptist, eg. They have really not looked intently or thoroughly at the question. They have only stepped sideways in the relatively same place.
Now very rarely, someone will have a major change, a radical change in perception, such as did Aquinas at the end of his life, when he wanted to burn all his work, saying it was “as straw.” This kind of radical shift happens not too often, but it does. It has happened in many other faiths then our own, as it is a kind of universal response to an actual deep insight. In this case, a penetrating re-assessment of the container itself happens. This is not just a stirring of its contents, and it is exceptionally distinct from what is common in most mere conversions, which tend to have only the consequence of an emotional, or at best, ideological shift.
Short of a radical insight into the actual Nature of the relationship of God and Man, there are not many tools available that are free enough from a preconceived framing in a particular faith to be of actual use in making a wise decision about choosing a faith. If there was, there would be few faiths extant, and few practitioners, because the root relationship of God and Man would be more directly perceived and there would be far less need for the kind of extractive structures we call “church” or “religion.”