Who was wrong, UK or Sweden? Both, of course. Both tried to archive herd immunity in 2020 spring by mass infection till they realized that they are wrong. Then they continued to let people to die for months from 2020 fall till 2021 spring (Sweden even till summer 2021) until vaccines arrived.

Only this was a turning point for UK and Sweden because they managed to vaccinate relatively fast the people who really needed protection from vaccines.

If you want to learn from somebody, learn from Denmark.

Here is Our World in Data comparison between 3 countries https://ourworldindata.org/explorers/coronavirus-data-explor...