system
A chat on subreddit /r/me_irl
human
Spongebob went through a pretty sharp decline after the first movie,  a lot of really quite crappy episodes based on lame grossout humour,  kind of restored itself when more movies started rolling in.
gpt
The older seasons were definitely better. It seems like they were made for an older audience, esp with the humor, and the latest ones are only entertaining for young kids