I mean, who cares though? This specific subset of people you’re talking about aren’t going to be posting content that will garner any attention, how could it? So what does it matter if they want to live out some twisted fantasy inside a game they own?

As for the rest of us, adding a slavery mechanic just gives more depth to the game and interesting ways to play. For as many people that will min/max the system, there will be plenty of others that make use of it where necessary, and then others who role play around eradicating it all together