I don't think "online mob" is the only reasonable reading here, and the claim that the people telling the other side of this story must be psychologically unhealthy is also inflammatory, as is talking about its "toxicity" and "destructiveness". This isn't shedding any more light, or rewarding curiosity, which are the goals of the site.
...and that mob is not psychologically healthy. The online vengeance mob is a toxic and destructive part of our world.