The question is, would these people be predators if people didn't bait them into it? If they are doing this for "content" or some sense of moral judgement, then they have an incentive to push people into these things more than they originally would.
I can imagine the following scenario being common (to the point at which I wouldn't be surprised if there is a tutorial for it somewhere):
- Find someone online who has serious mental health problems or cognitive impairment.
- Emotionally manipulate them into saying or doing something nasty that they wouldn't otherwise do.
- Invite them somewhere public and humiliate then online for content.
- Congratulations! Not only have you managed to ruin someone's life, you've done it in a way that you get to feel morally superior as well.
Target some marginalised group as well, and you can also justify hatred towards them and show everyone that your group is better!