system
A chat on subreddit /r/me_irl
human
I believe they're talking about how there's tons of flashback, recap, and useless filler episodes. I got to episode 300 and couldn't stand it anymore. Maybe it gets better and doesn't suffer past that? I don't know. I just couldn't keep going.
gpt
They stop at one point with the filler episodes, but instead pad out the length of the actual story, which is arguably worse since you could just skip the filler before, but that isn't possible anymore.

There is a page called One Pace, where they essentially cut out everything unnecessary, I heard it is good, but haven't tried it myself yet.