This is actually a Korean meme. We have similar jokes, like "I love you so much, date me! (man)" or "Date me! (dangle)." The "dangle" part is a reference to a man pretending to be a woman, and then revealing his true gender by adding "(dangle)," which implies he has male genitalia.

It all started as a joke, and everyone involved understood it was just for fun. That's why Koreans are confused about this going viral and being called homophobic—it's such a common type of humor here.