all medical terms get turned into hateful insults–moron, idiot, imbecile, r*tarded which is approaching but will never achieve n-word status-- all used to be actual medical diagnoses. “obese” will go the same route and be replaced by something else, which will also eventually become derogatory and be replaced
funny how “shit”, “piss”, “fuck”, “cunt”, “cocksucker”, “motherfucker”, and “tits” are almost everyday words now