Here is why you fail in your analysis:
1) The Spanish flu was very bad for healthy young people and extremely devestating for pregnant women and their unborn children.
2) The Spanish flu was during a period of war therefore most people were probably having a hard time getting food, medicine and water based.
3) The technology differences between 1918 and today are obviously exponentially different.
I heard we burned people during the plague to flatten the curve. Do you want to do that?