Let’s be real here, gay men had faggots for a very short historical period, it was used for multiple other “people’s” before then and really hasn’t been used exclusively for gays at all, moreso someone you find annoying, like a “vibrant” gay man. It’s why it translates so well, plus something about derogatory language with the gg seems to just suit the English language. Wigger, nigger, faggot, maggot, hell even niggardly is derogatory and that was long before dumb people associated it with nigger.