Would you say it's accurate to say LoK is told from Tenzin's point of view like how ATLA is told from Katara's point of view?
I dunno, I just get the vibe that Tenzin is the show's narrator, and not just because he narrates the intro. The show is mainly about legacy and change, and it's embodied in Tenzin and Korra’s relationship.
Tenzin is at first a stickler for traditions but his attitude gradually changes as he observes Korra’s progress. He sort of conveys how the audience felt about the show's change in aesthetics and Aang's legacy going forward.