No, it doesn't have to be bad faith. It's common (nowadays) to have such opposite beliefs that one or both opponents believe the other person is acting in bad f

No, it doesn't have to be bad faith. It's common (nowadays) to have such opposite beliefs that one or both opponents believe the other person is acting in bad faith or has amoral motivations. I recently had such a debate on HN and as we were talking people would pitch in saying the guy was a liar or trolling. He just truly didn't believe climate science for whatever reason. I also think he was a bit of an asshole personality wise, but I've never met him in real life so who knows.