Jigu's bazongas's feed

I still think the one controlled is Guwon and humans are just using him as a pawn because
1) if he makes everyone so miserable, they could let him die, everyone has a skill to survive in this town but they still chose to keep him alive.
2) I don't trust the doctor when he said he killed his kids, because then why other kids are in this town if they're not "useful" in Guwon's eyes. He even was searching for a teacher for them.
3) When he was saying "complicated" words he probably was repeating what humans been drilling in his brain to convince him to do all the dirty job.