They give you weapon camo.. because you can see your weapon in game. Can't see your character.
If you want to play hide and go seek, go on ahead and do it. We don't need players laying in corners blending into the environment.
I don't camp, but I don't care if others want to. I just think it would add a interesting challenge to the game. This is why camouflage was invented after all, so people would blend into their environment, why not make it a customizable core game mechanic? Instead we all get to look the same.