That's not what the article is about. I think putting some more objectivety into the decisions you listed for example benefits the majority. Human factors will lean toward minority factions consisting of people of wealth, power, similar race, how "nice" they might be or how many vocal advocates they might have. This paper just states that current AIs aren't very good at what we would call moral judgment.
It seems like algorithms would be the most objective way to do this, but I could see AI contributing by maybe looking for more complicated outcome trends. Ie. Hey, it looks like people with this gene mutation with chronically uncontrolled hypertension tend to live less than 5years after cardiac transplant - consider weighing your existing algorithm by 0.5%