[Freakish]

Argument 2 is bad. Nobody kills jail / trash shrooms for fun/exp. You kill there because you can pull myconid spore king at the same time.
I would say anyone has the right to camp ilis jail / whatever mobs in the surrounding area as long as they are not being kept down. You would have no right to the king spawn. And you're an asshat because everyone involved knows you're only killing so you can rule lawyer another group out of the camp.