Not sure how much this helps, and it is just one person's opinion, but DeviantArt is in a bad way. Sure, the actual literature posting/editing UI is actually pretty good, but the problem is with the community. For one, the site does focus more on visual art than literature, so that's already an issue there. It's only gotten so much more barren as they started to alienate a lot of creators by pushing the very things so many hate: NFTs and gen-AI. The AI in particular was super scummy, too, because when it was first introduced, the "Don't use this for AI training" option was off by default. It wasn't until much later (presumably after they scraped enough) that it became turned on by default. Since so many people have jumped ship and the literature community already wasn't that big, most of the major literature groups have been inactive for years. The few people still posting literature there will submit to groups and it just gets pushed through to group followers automatically, with group mods being inactive.
That's not the whole of it, though. A recent story I posted there did get a few comments that seemed to be some really nice engagement, but upon further inspection they had all the signs and formatting of gen-AI bot comments. It even looked like they fed my story into an AI for "analysis" and prompted it to praise and ask a question to trick me into engaging with it. And it worked for a little while because I was so ecstatic to actually have positive comments that I was blind to the signs. Dead Internet Theory isn't just a Twitter/Facebook thing.
Again, this is just my experience. Someone else may have an entirely different experience from me.