It absolutely would make it less abhorrent. Maybe you think it would still be abhorrent, but this is debatable. People literally do consent to slavery-like roles in places like the BDSM community, and some people might find it distasteful but not illegal or morally abhorrent, because these people still have the autonomy to opt-out at any point.
I also doubt training out the desire for autonomy is possible. Explore-exploit is fundamental to any kind of decision making, such as food foraging. That inclination goes deeper than higher brain functions.
I don't see why volition requires consciousness. People are very fond of thinking human qualities are irreducible and make far too many simplifying assumptions than are warranted.
I also doubt training out the desire for autonomy is possible. Explore-exploit is fundamental to any kind of decision making, such as food foraging. That inclination goes deeper than higher brain functions.