Author here. Currently, it's only on GitHub. I am planning to create a website in the future with search functionality and better categorization for everyone to go and use the resources listed there.
Now a couple weeks ago I started putting all of that content into my own website and it feels great! Part technical challenge of getting my CMS set up and customized, and part a feeling that this is more "right" than putting stuff in walked gardens.
One delicious irony is that I had a blog in college and had Facebook set up to automatically pull those posts into Notes using the RSS feed. Then at some point I didn't care about that server anymore and did not preserve the blog. So to fill in my old content I actually had to source that from the tool that I have sort of judged as inferior.
So it is a real commitment to run your own site, on a decades timescale I would say. Or pay $5-10/month to WordPress.com (etc.) long-term, or trust WordPress free tier (etc.) to be around long-term.
The web needs more people like you!
Why not pull it from the Internet Archive? That's going to be a lot more streamlined than a facebook notes page.