What do you think “non pharmaceutical intervention” are? It’s quarantines. It’s masks. And yes, there were quarantines as dramatic as today’s. Case in point: St Louis.
https://www.history.com/news/spanish-flu-pandemic-response-c...
https://www.history.com/news/spanish-flu-pandemic-response-c...
Are there other variables involved? Were those different times? Grand Rapids had the lowest mortality rate and, if I'm reading the chart right, had no NPIs. Why?
People pushing these hysterical false dichotomies (coupled with a hefty amount virtue signalling) are going to be responsible for a huge amount of human suffering in the coming months and years.