That’s why they can’t go with the obvious route of saying he has dementia issues–the cult wouldn’t hear of that. But he can conveniently have a debilitating event or illness. Sure, the cult will have conspiracy theories, which is why they have to be sure to make it look plausible. But even if they have to resort to him having an “unfortunate accident”, there’s nothing the cult can really do about it, he’ll be gone. He’s just too unpredictable and uncontrollable for them to let him keep going rogue so much. Destroying the global economy and causing a worldwide depression is not part of their plans.