Well, after all that, it turns out the netlify app linked in the post is a copy of the original PDF! So, if you care about the actual content, just go read that. The PDF does have some cool graphic design though.

I know I'm just talking to myself at this point, but I _finally_ get the meaning of the linked article title.

The netlify app is a fork, like a code fork, of the original document. Which is to say, they have taken the original work, transcribed it to a digital format, and will now evolve it.

I don't know if that just went way over my head or if it was not clearly communicated, but there you have it.