I had heard about it, but hadn't ever seen the show. (I rarely watch TV.) This got me to watch it. I'm glad I did.
I'm not sure that having seen it recently would make that much of a difference, though. It may head in a different direction.
I don't care, but the author does cheat at times. For example, Sokka never touches his boomerang
during this escape. Aang was conscious (you can actually see so on the previous page if you look closely) and windbent the fireball into the ice. So, yes, the author sometimes sneakily inserts screencaps into a scene in order to change what happens. I guess in this case he changed things to be consistent with D&D rules about recovering from exhaustion.
Given that the author does change things at times by inserting screencaps, things might wind up at a different place than the original. So far (not that I've caught up), the changes seem to be either rather minor or are obvious and silly.