From what I read of the article, a 'Bad Person' is just someone you have bad vibes with. Quote:
> They tend to be charming, capable, but since the beginning your intuition tells you that something’s not right.
So if someone tells you, "No, that is physically not possible, you will lose money, here is my evidence" and you just have some bad vibe about them, ignore them! They're just a bad person. In fact, remove them!
What a joke. The idiom "If you lie down with dogs you get fleas" comes to mind. Usually this rhetoric comes from people who have been on their high horse for too long, and call many other kettles black.