So instead of a racial slur they now make fun of Anime/Manga/Video Game fans

"Moe (Japanese: 萌え; pronounced [mo.e] ⓘ), sometimes romanized as moé, is a Japanese word that refers to feelings of strong affection mainly towards characters in anime, manga, video games, and other media directed at the otaku market. Moe, however, has also gained usage to refer to feelings of affection towards any subject"

https://en.wikipedia.org/wiki/Moe_(slang)

That in combination with Ghoul

"In folklore, a ghoul (from Arabic: غول, ghūl) is a demon-like being or monstrous humanoid, often associated with graveyards and the consumption of human flesh"

https://en.wikipedia.org/wiki/Ghoul

creates a not very nice combination.