My personal feeling is he was pure troll, someone who likes stirring other people up in his own way.
I simply don't understand that mentality. I frequent a bicycle forum and we have a similar issue there from time to time.
I just don't understand what people get out of trolling.
I enjoy coming to this forum. I learn a little bit and on rare occasion I get to help someone out. I find that very rewarding. I see no reward in trolling and Dexter spent a significant amount of time at it.