The whole thing is just a pitiful, vile attempt at whitewashing history. Anyone supporting this is an ahole and that's being kind.
There's not much worse than enslaving another person. I don't care what "benefits" you get. It's like someone blowing up your house and then saying you should be happy you don't have to trim the bushes this weekend. If you are a slave, you have no say in your own life, and that cancels out any "benefit" your kind master is giving you.
If I hear this absolute garbage in person from anyone--family, coworkers, strangers--I'll have this to say: "You try it. I'll be glad to be your owner. Keep in mind I'll have sexual use of your wife, kids, or you if I feel a bit spicy. I get to flog you--or kill you--if I feel you've done something wrong. Or just if I feel like it. I'll feed you, or I won't." And then that person gets moved as far out of my life as I can manage.