Haha, try not to get so hung up on the title- keep in mind that it's translated and can't preserve nuance. The original has a bit of slang meaning, referring to scumbags in general, with a moderate connecting to scumbags who cheat or toe the cheating line. I also think there was no reference to specifically male scumbags, but it IS used mostly for men.
Also, holy damn is the demon manipulative lmao, 99 point move, I hate it! Feng Wushuang, I pity the spirit of her character, getting written so terribly by her author.