It seems pretty juvenile to me. My brother has used terms like "gay," and "Jewish" to describe situations he dislikes, always getting this thirteen-year-old giggle about him when someone calls him out on it, as if he's made some hilarious joke. He does it because it riles people and he gets a thrill from doing so. It's about as fitting as calling something "girly" was 30 years ago. You say it to dismiss the topic at hand as something you distance yourself from.