Expressions of humanity from a foolish optimist, who does his best to love everyone.
Just think about it. They never say that Sokka died. Just that Katara “lost her brother” Could it be? Is it possible? I would hate to say that Aang and Sokka eventually became enemies, but teenage friendships can turn into that. Sokka could, potentially, have become a chi bender, no? I mean, Ty Lee joined the Kyoshi warriors, Sakka was banging a Kyoshi warrior. There’s a VERY good chance he could have learned it. Clearly Ty Lee taught people how to chi block. THIS IS INTENSE.
And I’m assuming that the story Amon told was a lie, thought there is a chance his face was burned by a fire bender. Maybe even Zuko.