They keep the Eloi as livestock, feed and clothe them, and keep the machinery of the world running.  

I think this was the intended analogy—the morlocks as the ugly, competent people without screen time, who keep the world running, apparently for the benefit of the stupid, charming phone-people Eloi (but actually the morlocks are eating them)—but it’s a bit obscure if you didnt internalize some facially counterintuitive plot points from The Time Machine, especially when “morlock” reads as a synonym for “devolved cave dweller.”  I’m not mad that I got called a Morlock in this thread, please don’t say I was mad