I don’t see how it’s obtuse. The morality of paying an executive disproportionately more is the same morality as paying a worker in the US disproportionately more than a worker in a poorer country.
At the end of the day, everyone is looking out for themselves and their immediate tribes first, and everyone takes what they can get. However, society is more harmonious when the delta is not too great. The US simply also had the luxury of having a delta of two oceans and huge amounts of space.
"Like" in the most obtuse aspect. What about how little I pay my kids or dog? Thats not in context.
The issue is the morality within the system in place in the US (US firms, per the article title).