Earlier quoted context omitted.
I made you this chart of the UK pandemic. It's incomplete by necessity, but gives the flavor. Do the dates and lockdown measures look unrelated? https://imgur.com/a/026CGjK
You have that as a log chart? Here, I’ll do you better: https://www.covidchartsquiz.com/
> One of these neighboring Southeastern states had a statewide mask mandate. The other two did not.
> [Shown: COVID-19 Deaths, per million, 7-day average]
But mask mandates do not claim to prevent COVID-19 deaths, rather transmission. A state with relatively low transmission but poor healthcare infra will see similarly unintuitive/surprising trends.