I know it can be a nuisance when other people camp on top of your own group. But as long as it doesn't slow down kill speed/monster availability too much, then idm too much. However, I never understood those people who insist on camping on top of others, and end up gimping both groups' kill speed. See: greater colibri camp back @ 75 cap, a 3rd party arriving and starting to kill stuff, thus gimping everybody's exp including their own.

On the other hand, killing a bst pet slept by another group just so the bst can use charm, is a shitty thing to do.

Claiming a mob that goes white, it not stealing. You can't steal something that nobody owns.