Yeah, but no normal people do. These are all very extreme and rare deviances. Deviances to a norm don't disprove the norm. If the deviances are more common than the norm, than they are the norm and the previous norm would be the deviance.Some people love drinking piss, some people think it's normal to lose your virginity to a goat, some people feel nothing negative about killing others.
The example about servants doesn't work either, because if they do whatever you ask, you can ask them to fuck off and never come back, so it still isn't degrading towards the person who is offered that service. You can try to twist language and meaning in that way, but you will not reach deeper understanding, you will only lessen the meaning of the words and our ability to describe things.