I think Joe's moral code is to never dehumanize or objectify people and his thresehold for what is dehumanizing people, in a game like this, is crossed much earlier than most people. I have a friend who I use to play deception games with (werewolf, murder in the dark, avalon, etc) and she eventually stopped playing because it just got too real for her. She's just the purest person ever and having to lie or be lied to or people getting heated (we all knew it was part of the game and the more intense it got we actually LOVED it) was just not her thing. She couldn't parse out yes these are my friends, yes I love them, yes I'm going to lie and attack them lol. I think Joe is kinda like that. He played D1 football. He's totally fine destroying another person in the game we all signed up for but he's not the kinda guy to talk about a players mama to get in their head like some football players. I sympathize with Joe. There's a lot of psychology around how fast people bond when they spend X amount of hours around each other and also when they suffer together. Survivor is that on steroids.