Chouji nods at the part about chakras, still searching for his sandals, but he looks up when Aang finishes. "All of them? Really?"

Elemental manipulation isn't quite as limited to one element for shinobi, but no one has every elemental affinity. He flashes back for a second to the battles with Kakuzu, but that doesn't count. The Akatsuki member was just stealing other other people's power.

Aang initially said one of the four elements. "What are the four elements you can bend? We have five."