Circling back to the episode, my incapable-of-letting-things-go brain has come up with a rickety headcanon for the Gorn variants we've seen thus far. These parasitic Gorn in SNW operate to cleanse the nearby regions and then go into hibernation until needed again. The more civilised Gorn types like Slar and the one from Arena are the ones running the Hegemony and deploy their bioweapon cousins when they need to do some interstellar gerrymandering.