Whether or not “goy” is a slur is pretty complicated. It has pejorative uses, and outside of a strictly religious context any non-Jew is almost certainly only going to see those pejorative uses. But strictly speaking it’s a Hebrew word that means “nation,” and isn’t any more or less offensive in the abstract than Jew, Arab, Brit, etc.

(To my understanding, the closest equivalent is “ummah” in Arabic, where the connotation is flipped: goy can refer to a Jewish person but typically does not, whereas the ummah typically refers to Muslim peoples as a collective but can also be a general stand-in for “nation” or “world.”)

It’s not literally a slur, but because it has developed negative connotations Jewish people tend to avoid it nowadays. Online, you are more likely to see it used by antisemites.

Which is why I think that story is very likely bullshit. It’s from an account that very frequently posts pro-IRGC content, and has previously used “the G word” itself.

https://news.ycombinator.com/item?id=46247908