One could argue that with AI writing so much code, the ease with which humans can read & understand it (for review purposes) is even more important than before.
Exactly, that's all his PR had to be. The history of finding the issue could be an interesting story (I bet it involves Elixir!), but in places it reads as almost malicious. If I received a PR anything like that on something I maintained, it would be received very poorly. The author comes off as overly aggressive toward the maintainers and far too sensitive to their response.
I remember the "History of English Podcast" covering a lot of this. I'm more a programming language nerd than spoken language, but I still found it fascinating.
Old English was a Germanic language, later heavily influenced by Norman/French vocabulary. French of course descended from Latin, and Latin and Germanic languages both belong to the Indo-European family of languages. (The "C" language of humanity, if you will.)