If they follow and obey him, they're a folllower. If they follow and criticise him, they're a stalker.
Dave's good at using insults to silence his critics. They're backslidden, not in the spirit, bitter, persecuting him, divisive, etc, etc. Anything that stops them telling a story different from his.
Forum:
"Cults," Sects, and "New Religious Movements"