I'm not sure if I'd call it sound advice - but there's not much stopping you from building a site based around (client side) Javascript these days. Maybe a markdown parser in js, some json (js) data files (à "database") - etc.
Basically a variant of how:
https://tiddlywiki.com/
works. Or:
https://chrisdiana.dev/cms.js/
In a similar vein (but not solely client hosted and managed) there's:
https://vuelog.js.org/#/page/about
https://www.gatsbyjs.org/
If all you need is a blog, it's really just a bit of navigation you need js/<some program> to help with. And you can of course add things like commenting as a SaaS that's essentially just an imported cross side scripting attack on yourself, much like with visitor tracking via Google analytics etc. See for example muut.com for comments.