Sensient, EB actually makes for a good example of a troll. 1st rule of identifying a troll is they play the man not the ball. 2nd rule of identifying a troll is they often play a complex and subtle game with things like false sincerity. So for example, after EB insults you (and others) he signs off with thanks for sharing. Let's face it, if he appreciated you sharing he wouldn't then insult you (and others).
Also with trolling, one of the key things is about baiting, it’s about trying to get other people to respond. There are also ways in which they provoke futile argument. Some of the maybe, argument fallacies of attacking a straw person, calling arguments rumors, things that may provoke others in the community to respond. See
https://www.dwrl.utexas.edu/2016/11/15/the-art-and-rhetoric-of-trolling/
Psychological studies show trolls tend to be male, show higher levels of psychopathy traits — low levels of empathy, guilt and responsibility for their actions — and higher levels of sadism traits, the enjoyment of causing others physical and psychological pain.
Trolls are also motivated by what psychologists call "atypical social rewards" or "inverted social reward" where they get their kicks through the enjoyment of callous treatment of others and negatively associated with the enjoyment of positive social interactions. This indicates a pattern of ‘inverted’ social reward in which being cruel is enjoyable and being kind is not. See
Inverted Social Reward: Associations between Psychopathic Traits and Self-Report and Experimental Measures of Social Reward
Basically, trolls get their kicks fundamentally because they suffer from a negative attention disorder (with underlying psychopathic tendencies) where upsetting people evokes a negative response and feeds the troll (i.e. it gives them pleasure and motivates them to troll more).
The point really is to ignore the troll and not feed his psychological pathos for inflicting hurt on others. Move on mate and don't take it personally. And most of all don't feed the troll!
