For what it's worth, the linked page is itself running on Fossil, which has of course build in forum facilities and several other suchlike goodies - being a complete solution, packed into a single smallish executable with no significant dependencies apart from SQLite. The Fossil site runs on very moderate hardware, and gets no hiccups from hitting the HN frontpage.
I like this kind of untroubled minimalism, and so far have never encountered a reason not to run every personal project on Fossil. The real world will occasionally force me onto Git territory, but I can't really say I have ever enjoyed the experience.
Git is here to stay for any foreseeable future, of course. And while I do understand points often made about the benefit of one de facto standard to rule them all, monolithic dominance always tends to unsettle me. My SE friends in general simply use 'Git' as a given synonym for 'version control'. And it does annoy and somewhat worry me that they've never even heard of Fossil until I roll out my sermon.