He is without a doubt one of the worst. But I'd be careful denouncing him if I were you as your conduct here is far from spotless as well.
Pot and Kettle.
Except most people have been REACTING to him. If he was gone, I'd bet money the site improves tenfold.
If we start banning people to improve the site it sure shouldn't be just limited to him.
I've noticed that the people who scream the loudest to have him banned are also the people who should be next in line if they get their wish. I've got little patience for people who claim it's alright to be troll because somebody else did it first. Especially as they're not half as discriminate as they claim they are.
Only a troll would constantly react to another troll by sinking down to that level. No matter how you sell it two people being assh*les = two people being assh*les.