I knew it all along, Amon is a hypocrite. Not only is he a bender, he's also Tarrlock's brother, which means this whole event was really Yakone's hatred pulling the strings. I'm so happy that Korra learns how to airbend, but at the cost of losing her three other elements, but thankfully, Aang came to the rescue in spirit and taught her how gain people's bending back. Plus I knew she'll be in her avatar state eventually, but that's near the very end of the season. Perhaps next season may take place years after the events in Republic City.