To add to the discussion, my impression is that many people in the US believe they have some moral superiority or know what is good for other people. The whole “we need a manhattan project for AI” discourse is reminiscent of calling for global domination. Also, doing things for the public good is controversial in the US as it can infringe on individual freedom.
This makes me really uncertain as to which AGI would be better (assuming somebody controls it).
You touch on the point that people can mean several different things when talking about preferences. I think this causes most of the confusion and subsequent debates.
I wrote about this from a completely different perspective recently.