I was using Emacs and ox-hugo to generate my static website for a while, but after looking at this, I eventually decided to ditch Hugo (and thus ox-hugo) and export directly from Emacs (it’s always a good idea to cut the number of dependencies and stick with one format, org).
A few months later, while still being an Emacs (and Emacs-Lisp) n00b, the transition is complete, with a smoother workflow than before: SQLite3 integration, howm notes transclusion and ox-tufte CSS (I haven’t used those in the previous, Hugo version). The site is generated with the same script on both Linux and macOS (using Resilio Sync to keep everything in the same place).
My website is here and the script generating it is on GitHub. I welcome any feedback, tips and/or tricks.
So thank you, @daviwil!