Amazing deductive leap there.
I will admit that was badly worded - what I should have said is something more like: their temperament is compatible with local expectations of a "good tradesman".
That's quite possibly a contributing factor. But I think generalisations are quite valid based on averages. When I travelled across the Baltics nearly
10 years ago, the difference in the typical temperament of Estonians, Latvians and Lithuanians was marked. All perfectly friendly - but the Estonians were definately a quieter bunch and the Lithuanians reminded me of Italians in many ways.And of course it is an avergage view - plenty of variance.
Tim