It seems like there’s a lot of ways to go about this that may be overkill, so I’m curious which may avoid that.
Low maintenance in this context is aiming for moderate technical knowledge/setup, lower cost, and portability in case you need to migrate your site and so minimal hassle in that process.
Wordpress. Or some other hosted blog/cms.
Yes you can go crazy with SSGs or write your own site but especially if it’s rare that you will blog/update then it’s way better to just use something off the shelf. That’s what I’d do as a software developer. Heck I paid for a static site with a simple web UI to update it just last week to serve as the marketing site for my software product (that I wrote from scratch).
Unless you enjoy tinkering and know programming I would shy away from the SSGs. I used them for years and now I self-host Ghost and even that I’m considering just paying someone else to do since it’s not how I want to spend my time (maintaining it).