I like it. Clean looking theme. You won't hear me complaining if someone makes it easy for people to make good documentation.
Static site builders are just annoying enough to use that it's a barrier to keeping documentation updated. You have to have a GitHub repo, write in markdown, and commit changes which means that nontechnical people can't really help keep documentation up-to-date.
I didn't see it in the demo, but how does it handle code snippets? That's the biggest pain-point I have with keeping documentation in WordPress.