Yeah I think they were going for the mafia definition, but "feelings losers" fits perfectly. If anyone remembers the Japanese dialogue from Yakuza games, they like to call themselves Gokudou. (the wicked, the villains) Probably because it sounds more badass than losers. It might be used more in fiction than real-life though.

Another good one is porikore yakuza - The politically-correct Yakuza. It's been gaining popularity lately.