Well let's look at it this way: Both PvE and PvP have a portion of their player population known as asshats. Given that PvP by its nature draws more competitive player. Thus PvP tends to have a higher percentage of competitive asshats. These competitive asshats generally make their way to forums, as asshats of all stripes are want to do, and begin to give normal PvP players a bad reputation. Now PvE asshats often show up as your more traditional "troll". They aren't as directly aggressive as the PvP asshats, but they certainly make up for it with loads of passive-aggression. The prime example of this would be an individual who is not planning on playing PvP but takes some twisted joy from the PvP players not having an option like custom games. Additionally PvE and PvP asshats are often sickeningly proud of finding exploits to avoid having to actually achieve things through normal game play or skill. Thus ends our presentation.