Doubter is incapable of being intellectually honest. Just tell him to fuck off and stop feeding him. There is some sort of thing that happens where these Watchtower bots come here for x amount of time, try out new material, we feed them, and they disappear. Then they come back later to start anew.
Just say fuck off Doubter, and refuse to feed him. It worked with Bobby before him. Don't feed the pedo protectors. They don't deserve your time.