I don't think anything will move those that don't want to be moved.
I was like that once, but fortunately I was not tied to the cult by having too many family members or whatever keeps the "flock" in their place.
I saw the light by their actions which did not comply with their doctrine and thank goodness, I managed to slowly get out before (hopefully), too much damage was done!
But as for those life-long-saddo's that have no-where to turn or that lack the balls to do anything about it.........as you say..........they will remain unphased.