Some more idiocy. 25M to 100M dead, out of a world population of 1800M. Or 1.4% to 5.6%. In the US, where the disease probably originated, the rate was 0.6%.
The Black Death of the Middle Ages killed probably 20% to 30% of the population of Eurasia.
Previous epidemics in the time of Pericles and Justinian (and many others) had similar death rates.
During the 16th century the native population of the Americas was reduced by somewhere between 80% and 95%, almost entirely due to epidemics caused by the merging of the Afro-Eurasian and American disease ecosystems.
The 1918 flu, for all the suffering it caused, doesn't even bear comparison to such incredible catastrophes.
There you go, bringing up inconvenient facts.