If you mention SpaceBattles we also need to add Sufficient Velocity for completeness’s sake.
There’s another one that focuses mostly on erotic fiction but since that’s not really my bag I’ve forgotten what it’s called. And I think it’s not as big as SB and SV anyway since that user base is mostly on AO3 these days.
As a programmer who likes to see himself more adjacent to artists (and not only because I only draw stuff — badly — and write stuff — terribly — as a hobby, but also because I hold the belief that creating something with code can be seen as artistic too) this whole attitude which has been plaguing the tech industry for — let's be real here — the last 15 years at least but probably much longer makes me irrationally angry. Even the parts of the industry where creativity and artistry should play a larger role, like game dev, have been completely fucked over by this idea that everything is about efficiency and productivity. You wanna be successful? You need to be productive all the time, 24/7, and now there's tools that help you with that, and these tools are now fucking AI-powered! Because everything is a tool for out lord and savior productivity.
(I really should get to this toxic productivity write-up I've been meaning to do for a year now,)