> His problem is that he thinks they're strange for not just offering more money
I don't think he thinks they're strange, he's just surprised. When you visit France and can buy high quality wine for half the cost that you get in the U.S., it's surprising. When you go to Singapore and see that housing can often be more expensive than luxury apartments in NYC, it's surprising. Similarly, when you go to Japan and see people doing the same thing you do, but making 30%+ less, it's surprising.
Maybe the cost of living and government provided social services make up for some of this difference, maybe they don't. But having some initial sticker shock in the price differential can be pretty natural.
If he has a problem, it's that he thinks a unit of work should be valued equally , i.e., if I do X, it should be universally valued at $Y. It's a nice thought, and I'd like to wish it was true, but it's not how our economy works. The value of X is not intrinsic, it's based on what someone is willing to pay for it.
Coal mining in the U.S. in the 1950s provided a solid middle class foundation, but the same job today does not. Beethoven is clearly a better musician than most pop music, but few today would shell out money to listen to his music, while they would for many popular artists.
Hopefully from this, he can realize how lucky he is to have access to a country which, for a variety of reasons, values this type of production more than other places in the world.