> There is merit for harsh policies if you can prevent any case, what NZ did relatively successfully. But admitting that it failed is hard to convey politically.

Note that the South Australia app under discussion is in an Australian state which, like NZ, is relatively successful at preventing “any case”. It seems like the last case necessitating a 7-day lockdown in SA was almost 2 months ago and before then they hadn’t instituted a lockdown since Nov 2020. https://en.wikipedia.org/wiki/COVID-19_pandemic_in_South_Aus...