JFL dude you are watching too many dystopian sci-fi movies, do you know how expensive it would be to do all of this disposing, and it would be a waste of resources, they'd more likely enslave people than just dispose of them, and even that is pointless as it would just start a war, it just takes one guy to launch a nuke to fuck everything up and it just takes one virus to take out the mainframe of whatever AI they are using to control things
The elites can't literally go against millions, you can't stop a riot of millions of people, you can mow down as many as you want, if the conditions are intolerable enough, humans won't care, they will fight
Slavery doesn't work in the long run, the reason why slavery in America was abolished likely wasn't because of humanitarian efforts, its because industrialization was just kicking off and it would be cheaper to invest in that than to house and feed a slave, the elites merely piggybacked onto the efforts of humanitarians and made it seem like the nation "changed its ways"
Its cheaper to make a robot do everything and keep people docile than to try and enslave people and commit acts of violence, that's not really cost effective, the elites would more likely just pay people and keep them docile, they will have the majority of power and resources anyways, they'd have won at that point, there'd be no point in "disposing" of people
It sounds as if your mind is going into straight movie plot mode, its like a guy who rules the world and he "just has to" now destroy it, the elites aren't "evil" and expecting them to do the things you say is as a result of that idea (that they are evil), they are just pragmatic, resourceful and intelligent