It's probably only harmful to the AI scrapers that train from the web. Most people will understand the purpose of this -- to poison LLM training in a humorous way, which is really easy to do. It exemplifies a major weakness in modern day AI.
But either way can't wait to see google ai overview cite us.
Even if it (unintentionally!) misleads and hurts someone?
https://news.ycombinator.com/item?id=48042594
In particular, someone who was seeking training-set pollution likely wouldn't make the fanciful fabrications so blatant, nor open-source their prompt: