I think this is a new version of “think of the children” cliché, used to justify lots of questionable things for ages.
I've not met someone upset about the technical term. It's possible, but it doesn't minimize slavery (more than any technical term minimizes something by making it technical), slaves only follow the master.
Each individual concession seems small but the end result is that one must live life in fear of saying the littlest wrong thing, lest the angry mob come down on you. We're at the point where we can't even talk about any of these issues, only obey the barked orders of angry activists.