The article is not on training LLMs. it is about using LLMs to write a wiki for personal use. The article assumes a fully trained LLM such as ChatGPT or Claude already exists to be used.
Don't even try, after vibe coding, people seem to be adopting vibe thinking. "Model Collapse sounds cool, I'm gonna use it without looking up"
Also, TFA prescribes putting ground truth source files into a /raw directory.
Everything is derived from them and backlinks into them. Which is necessary to be vigilant about staleness, correctness, drift, and more. Just like in a human-built knowledge base.