[justin66]

And the language is nevertheless recognized as one of the country's two official languages.

I just don't think Finland is a great example of what the post was talking about (a mythic country where everything works because it is an "ethnically homogenous high trust society" - although on reflection I'm not even sure what that all means). It's a way of lazily discounting what their government might or might not be achieving regarding homelessness, and it's not even true.

I'm not any sort of expert on Finland, but they have had some real political and social divides over the years and (I think?) nevertheless manage to care about the effectiveness of their welfare state. They'd appear to be a counterexample to the notion that everybody in a country needs to be the same in order for this stuff to work.