This means Aang saved the world 3 times.
Once by defeating Ozai at age 12. What have you done with your life so far.
Second time by fucking Katara and continuing the airbendering line.
Third time by whatever the fuck happened in this epsiode. Yeah, he saved the world from beyond the grave. How’s that for badass.
I think its safe to say Aang better get 1000000 more statues after this (preferably nudes).