This troll enjoys such a low rating because we have yet to determine just what his motivations are for trolling the rest of us. He is most certainly enjoys the thrill he gets from making all of the pro gamers mad, but otherwise his presence is quite mysterious. He is coherent and intelligent, which also prevent him from getting higher up in the tiers.
Polistes is widely known for flaming the pro gamer portion of the Sins community and going off on tirades about how Single Players don't care anything for balance and they just want to have fun. When the modders respond to him, he just ignores them, and instead continues to berate the targeted pro gamer(s) until he feels that they have been sufficiently riled. Then he turns around and attempts to make you feel like you have wronged him somehow.
In order to avoid making him mad, attempt to make him feel better about himself with pictures of cats and cookies and bunnies. This will most certainly help keep his infamous 10-post barrages down to a minimum.
Also, do not mix Seleuceia and Polistes. They do not seem to get along well.