When I started writing I set a limit of 1600 to my posts. It was fine having a lot shorter posts, but the 1600 characters was the hard limit. No more than that, period.
Then came 200wad. Like the name suggested, it was about writing 200 words a day, minimum. So I adapted, decided to push myself to write over that limit every day.
A while ago that limit was removed during the rebranding of the platform. The new Cowriters didn't have any word or character limits. First time in my writing endeavour I didn't have any technically enforced limits for my writing.