Well, the word "goy" is often considered as deeply offensive, especially in the far left or within catholic/sunni cultural environments. They consider it as a proof that Jewish culture is inherently racist, and based upon the intentional discrimination of "Others".
Of course, they do not understand the real meaning of it, how it was formed and why. And the thruth is they don't want to. It's a perfect exemple of cultural dissonance, when values conflict (especially around the definition of universalism).
A lot of modern anti-Semitic propaganda makes an extensive use of the word goy/goyim (in Hebrew, plural forms often end in -im. Hence some semantic mysteries, like the word Elohim you wouldn't expect to find in a so-called monotheistic religion).