It'd be more correct to say that the Nazis were big on Swedish topics such as eugenics. Sweden was world leading in eugenics 'research' for decades before the Nazi party was founded, and the State Institute for Eugenics Research wasn't closed down until 1958.
> Sweden was "neutral" but big on nazism topics such as eugenics.
Social Darwinism, including eugenics, was quite socially acceptable until the Nazis made it unpopular by association, and even then many countries (US, Canada, Denmark, Sweden, I forget which one in Latin America that sterilised poor women without telling them, etc.) still continued practising some parts of it for decades after. It only really became accepted as flat out wrong in the developed world what, in the 70s-90s (as an example, Canada's last residential school closed in 1997)?