Of course, the beast knows the slave population individual lifetime needs to be tailored, to get maximum energy returned from each human lifetime, the more things that happen to limit the lifetime of each slave, to only to their "Fit" working years, the better for it, now availability of energy for it, exclusively extracted from the planet, never energy added to the planet, is depleting, elliptically.
It all makes perfect sense, after we see the beast, and it's only antidote, the intelligence powered by the opposite polarity of energy.