I will gladly point out how it's super racist.
You see that they're the happiest country and then you immediately connected it to being homogeneous as the sole driver of that happiness.
You didn't say "oh, well, they have a strong social safety net with access to quality universal healthcare. That's why they're happy."
You didn't didn't say, "oh, well, they have universal free education, that's why they're happy."
You didn't say "oh, well, they have amazing scenery, take steps to preserve it, and spend a lot of time out in it. That's why they're happy."
You didn't say "oh, well, they have a population of just over 5 million people, so that's a very low population density so they don't have to deal with overcrowding or housing issues."
You didn't say "oh, well, Norway has a strong work/life balance ethic that focuses on family time. That's why they're happy."
No. You didn't say any of that. You went straight to "They're happy because they're all white people."
That's how it's super racist.