It might only be tangentially related, but this reminds me on my observation that I think some people's psyche are irreversibly broken from the watching or simply hearing about endless shonen series, or more specifically, their long running anime adaptation. And I noticed this result in two type of people
1. People who think all series should be endless. For example, I see people who commented in the ending of Demon Slayer manga, "I don't understand why the mangaka end the story here, there's still a lot of stories to be told. The mangaka could tell story about the next generation of demon slayers, or tell story about their reincarnation." Another example is a comment I saw early on Ichinose Family's Deadly Sin, "This looks interesting, but I don't think this have long running potential," while it's obvious that it's never meant to be a long running series and the mangaka has an ending set in their head. And often time they only think a series can only end when it's cancelled and never when the creator actually want to end it, when they see a series ending, no matter the ending or how long the series lasted, they'll say it's secretly cancelled.
2. People who became unable to enjoy slice of life or character-based stories. For example (though I forgot the exact manga or anime they're talking about, but I do see this conversation myself) something like, "I want to watch Gundam Witch of Mercury/Cowboy Bebop/Avatar the Last Airbender, can you tell me the list of filler episodes I can skip?" Imagine going to a tv series forum and asking "I want to watch the tv series Friends, can you tell me the list of plot important episodes?" They consider anything that doesn't "move" what they consider as "plot" to be filler.
