Found via the GitHub page https://github.com/ox-tufte/ox-tufte which is mentioned on Dennis Ogbe's blog https://ogbe.net/blog/emacs_org_static_site
See also the article https://weary-travelers.gitlab.io/posts/how-tos/python-development-without-tears/guide.html

Nice blog design, inspired by the Tufte Jekyll theme
https://github.com/kmayer/tufte-jekyll
which in turn is based on
https://github.com/edwardtufte/tufte-css which is demonstrated on https://edwardtufte.github.io/tufte-css/
The latter uses CSS, so it should be possible to use it with org-mode.

Later, I rediscovered the blog via Sacha Chua's link https://takeonrules.com/2024/05/18/a-quiet-morning-of-practice-to-address-an-observed-personal-computering-workflow-snag/ on https://sachachua.com/blog/2024/05/2024-05-20-emacs-news/
I like the https://takeonrules.com/site-map/epigraphs/
https://takeonrules.com/2025/06/14/re-the-cult-of-hard-mode is also interesting, so is
https://takeonrules.com/2025/05/05/migrating-to-linux-on-guiding-principles-and-keyboard-bindings/

Edward Tufte's home page.