Pole=Selfish? Judge much? Really?
A diver is selfish if he lets his gear--whatever it may be--get in the way of his fellow divers' enjoyment of the dive. Some do. Some don't. From what I have observed, selfie-sticks seem to encourage careless behavior. Keep the thing stowed close to your body when swimming along in a group, and extend it judiciously, checking first to make sure others are not anywhere near where you are sticking it, and everything should be fine.