The real camping that's bad is hallway camping. Sitting (or prone. ugh) in a back corner looking down a long hallway or path with only one entry way. If somebody stays stationary at the top of the hill in the middle of an open map that's cool by me; that's why I do and it takes skill to take on and kill people from all directions. But if you're camping the same way people camp with a shotgun only using a sniper and the lone doorway is a fair distance away, that's when you're a dirty camper.