It's also very hard for a poorer or even middle class immigrant to move to a place like Switzerland because the cost of living is so high. This creates an environment of unanimity you wouldn't see in more diverse cultures like the U.S. or the U.K. I think that's largely why Switzerland and the Scandinavian states get accolades from U.S. politicians (not as much division.) But they don't seem to get that the cultures are no where near as diverse and thus the politics are not anywhere near as divisive.

That's not a criticism of diverse cultures, more of states living in relative unanimity being in a bubble.