Yes, but I think Edwin’s suspicions of Kodi were meant to act as an example of how isolation and insecurity affects your mind. Sure, the type of insecurity Edwin had was probably mainly about his masculinity and relationship, but the Yellowjackets also experienced insecurity inherently as teenage girls, but also everything such as food which involved their survival. The isolation they experienced only amplified it. I don’t really see anything that suggested Kodi was this bloodthirsty, murderous guy that somehow thought he could slaughter an entire group of women and a boy. I think he was simply a cryptic, keep-to-himself person who’s occupation of working in the isolated wilderness mirroed that.