I believe it's fine, but it does need to act more like a mod manager than anything else (so we don't need to have mods within steam workshop to actually use it)
I think it began as a way to curb piracy, give them a good way to get mods and integrate it with steam, and it did work, a lot of people buy games just to get access to the workshop
If you want a solo DnD you should understand that you're not getting DnD but at best a co-written story in second person perspective
Look into SillyTavern and Worldlore in the docs
Understand that this will actually take hours or even days to set up, and in the end, it'll still be an AI that is ass at its job, something you have to fix every few messages
You should also know that self-hosting ai may not be enough, 4k tokens is bare minimum and even that usually takes up 8gb of vram, DeepSeek API is cheap, use that.
I watched it live, frankly I'm surprised, but thank fuck, genuinely great considering how they acted in the past