I am still irrationally annoyed that somebody made a Wikipedia article for their own made-up definition of high vs. low fantasy ("another world" vs. "our world", as opposed to the common definition, which was basically Tolkien vs. GRR Martin), based on a single decades-old article that didn't even mention the phrase "low fantasy", and managed to unilaterally change the definition.
No one could find a reference to contest it with, because nobody was writing articles defining terms that everyone understood; and the original editor's reference was not available online at the time, so no one could look at it and say "Uh, this is just some rando saying it would be cool if we called secondary-world stories 'high fantasy'."
Now the original, bogus reference is gone from the article, replaced with 20 low-effort articles that are obviously sourced from the same Wikipedia page they're being used to support. Boom, citogenesis! https://xkcd.com/978/