Why do you or so much energy into replying? Everything was already said, just link to an overview post summing it up.
I don't share your confidence that "everything was already said". Though I could link to a node that summarises the observed behaviour patterns, that does not solve the mystery of the "why" behind the behaviour. Note that your summary link does not address the "why" behind the behaviour.
Please note that -- unlike many of his detractors -- sundial does not (deliberately) hide behind a cloak of anonymity, so simplistic "psychology of internet troll" arguments do not apply. If anyone with psychology qualifications can provide some insight, I'm all ears.