Earlier quoted context omitted.
I don't know why is necessary to explain anything. Maybe the explanation is that the Germans work less hours. It would be logic, a richer country, a better life. Is that shameful or something?
I think the desire to explain something comes from the data not lining up with expectations. You either want to explain why the data lacks details and reality DOES line up with intuition OR why the intuition was wrong or prejudicial. I get it, stereotypes can suck and make bad null hypotheses but thats how these things go.
You can accept the data and change your theory or you can ignore the data and keep your theory.
The more simple theory here is, obviously, that the Greeks work more.
It bothers me that many people in a community of theoretically science orientated people, as HN, choose the more complicated explanation by default.
"thats how these things go" is a really low standard, by the way.