To expand on a theory based on a claim that is unconfirmed but seems crazy if fake...
Let's say there are three Aananders: green, red, and blue. For the cult to win, both green and red Aananders have to die AND all threats to town have to be nullified.
If that's the case, it's in the Cult's best interest to play like town, except for lynching gA. rA dies when scum is removed from the game, leaving bA. At some point, someone in the Cult could decide to claim and say ask for gA to sacrifice themselves -- probably near endgame and with rA being dead.
This is just a spitball setup creation sort of thing. If the modified towncult is the centerpiece of the setup, you build around it. Aanander (clone?) cops, for example, could be a thing (i.e., each night you may target a player; if they share a flavor name with another player, you will be informed of that fact). Then the cop doesn't even need to know it's A, although flavor tells you that maybe.
Anyway. The danger here is if the Cult is actually a Cult, then it wouldn't share town's wincon. They could win separately and the game ends, or they leave. Then we'd be left having played for them.
So, if anything, any and all Cult related matters should be dealt with in a manner to further the green wincon, not theirs.