The Swedes are betting that nobody in the world will be spared from COVID and therefore the delta in deaths is temporary. They are front-loading it while attempting to keep the economic impacts as low as possible. They anticipate the rest of the world will be contending with shutdowns, re-openings, shutdowns, re-openings, and when all is said and done, the death rate per capita will be the same the world over.
So far, they the Swedes have bet one way, much of the rest of the world has bet the other way. Time will tell, but it is much too soon to make that judgment today.