Idk y but I found this on Twitter and I think she's right for certain part.
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Stop asking writers when they are updating. Fanfic writers are people with jobs, school, families, and lives.
Leave them a comment saying what you like about the fic instead of leaving a comment saying “when will this update?”
I guarantee it’ll make the author smile.
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Please understand that the authors doesn't mean to late update the story but yeah, we have our life too. Besides, it is us who have to brainstorming the story ideas while the readers just wait and read. If you're the author I think you will understand what'd I mean here. That's y I hate so much when some readers said, "Next". It's irritating and doesn't seems like a support at all. If you want to get a fast update then give a good words and supports. Not words like you want to push the author. Did y'all pay for the story? No right? Then at least appreciate it. Be thankful that the author still want to continue the story. What if they doesn't want anymore and delete the story? Serve you right, then.