Thats a hard question. I think it shouldnt because survival is the key in this game. If you can just rush to get some kills and not care about If you survive or not then alot of players would just push around the map farming scavs and Bosses to get their xp up. I think the idea of The game is to survive your raids. I tend to allways push the nearest spawns or try to cut em off for some early pvp then go for my main objective. And thats just to give me some more room to move around. So im not just avoiding pvp in my raids. Heck i joined very late into the wipe (like a week ago). Played for about 4 sessions and did still go for the early raid kills with great success i may add. But i still think that surviving your raids without a single bullet fired would give you more xp then killing some NPCs but get yourself killed in the process.