A better than average writeup about happiness in Finland vs US and UK. To me, it shows how different people in different places cannot live a happy life in the same way, but there are relevant things to learn from others. My personal take-away is that at the moment, Finland just happens to have a good balance and the best statistics.
I think the Londoner is trying to explain Finland to the people of United States - after all, the text was published by Slate.