I used to think there were a lot of covert fades. However I'm not so sure anymore. I say this because until you have something solid to stand on and say hey this is all foley people tend to stay in thinking "what if they're right?".
What I do believe is that there are many that are ripe for the picking. What I mean is that it will only take one incident to open their eyes and then the whole thing falls like a house of cards.
Once you do honest research you cannot continue believing in the organization, it's leaders or ideology. Simply isn't possible.
But again something has to happen to trigger them in such a way that they honestly investigate their faith.