It doesn't seem to be actually illegal, so I think someone cute enough with the right science could (maybe) practice ethical cannibalism (if doctors could/would allow it). A hand-for-a-hand, with multiple interpretations (holding, robotic, rumblies, marriage). Money somewhat an issue now, less as tech advances/ages.

If someone paid for cryonic preservation of my head (also some legal stuff to hopefully ensure a good-context revival) they could have my defective meatbag. Well, death is still a legal issue here.

I'm sure if people actually did this it would cause a stink, but also I could see it being easy to get takers. Like any modest proposal, I guess. I can imagine some politicians would see it differently, demonizing its implications for the workforce (or comparing it to prostitution) rather than thinking/talking about why anyone would agree to such a thing.