Because pvp in every single game ever that consists of pve and pvp has the most obnoxious and rude players and for that reason they often get the most attention. I'm not saying all pvp players are like that but a large portion are. I think of it like two children: one is sitting and playing with toys and is content. The other is screaming it's head off because the toys aren't to their liking. Which child will be the first to receive attention?