The very bottom of the slider is there to illustrate where LLM artifacts and Wiktionary noise live — it's not presented as legitimate vocabulary. The slider lets you see the full quality gradient, including where it breaks down.

That's not really mentioned in the article, though. As far as the article is concerned, the right side of that slider is valid-but-possibly-too-rare-to-be-interesting, when in fact it's just garbage. This does not sell the concept well.