Everyone has their own theory about why some countries do better than others, but we don’t yet know why: https://www.theguardian.com/world/2020/jun/07/immunological-...

Does it help to jump to conclusions about the cause being lockdown variations, or weather, or sunlight, or political leanings?

Anybody can cherry-pick their example countries to support their argument, but so far I can find counter-examples to their points whenever I look. I do agree lockdowns have their place (e.g. New Zealand has eliminated the disease using a lockdown, and the Asian success stories).