If they can change core beliefs such as:
- The meaning of the "generation," the foundation of their apocalyptic prophecies
- Who the GB are
- Blood policy
They can change anything without blinking an eye. Their whole arrogant attitude has been to elevate themselves and to denigrate literally everybody and everything else. Like somebody pointed out, they would lead you to believe they invented electricity if they thought they could get away with it.
I do agree it is a means to keep the faithful tuned in. I think it's just a novelty to a good percentage, don't know what that percentage is...maybe half would not be interested in an ongoing basis. Instead they will be watching "Homeland" and "Breaking Bad"...of course and binge watching "Orange is the New Black."