Public Facebook comment sections on third party sites have the ugly effect of self-selecting users to those who either really don't care at all about appearance

Public Facebook comment sections on third party sites have the ugly effect of self-selecting users to those who either really don't care at all about appearances or who have that special level of righteousness that makes them believe that any opinion they might voice would be universally applauded. Those with a more balanced opinion tend to not put out their flag in a place like that. It's a recipe for the perfect storm. Real names do stop most people from being nasty on the internet, but that also makes them invisible, so that only the unstoppable minority remains.