It's not a bad troll, really, although the "Incompetent Expert" troll is a little too formulaic if you ask me. It would probably work better in a forum that was a little less jaded.
I honestly think he's been damaged by tumblr.
It explains his urge to be right in all things, and his surprise at the idea that rudeness is a poor opening strategy when meeting a new community.
And I don't think he's quite smart enough to be trolling, at least not in our sense of the word. I think he's a special special snowflake, who is enraged that we don't acknowledge his specialness.
I could be wrong, but that's how I'm going to treat him.