system
Given the following post, respond as if you're commenting on Reddit:
human
[Avatar cartoons] Why do the spirits of Aang's era seem to have so much more gravitas than Korea's?

Most of Korra's spirits seem like cartoon characters, whereas Aang's spirits all felt like forces of nature. What's the difference, and why?

Edit: You can't edit titles >_<
gpt
I think there's selection bias going on. The most serious spirits were the only ones who made the effort to contact Aang during the events of TLA. In Korra's time, the walls separating the "mortal world" from the spirits were removed, so any random spirit could cross over at will. This was also the case in Wan's time, so the spirits behaved similarly in that era.