Is it defecting if you get a robot to do your dishes, instead of doing them yourself? As you said, it's not taking a job from anyone, just freeing up time for yourself. If anything, this specific use-case sounds like it would be a major boon for nation-wide productivity with little downside.

Uhm, no? What if it has a glitch or bug or gets hacked and wants to hurt me or someone else? I'd rather do all of that myself than own a movable bot that could crush my head like a melon for any reason while I'm sleeping, no thank you