Maybe; but the people who were genuinely interested in helping this man and/or learning from him are not the same people as those that murdered his tribe/family

Maybe; but the people who were genuinely interested in helping this man and/or learning from him are not the same people as those that murdered his tribe/family, and this probably isn't something beyond this man's understanding, just as we can understand that not all Germans in 1942 were genocidal camp guards. Or maybe he did distrust all "foreigners" and just wanted to be left alone, and that's fine too. All I'm saying we could've asked.