Here is something else to think about.
The 1918 flu caused pulmonary edema (fluid in the lungs), that would require treatment with diuretics, and probably mechanical ventilation.
There are a tiny number of ICU beds relative to the population, and they stay full now, with no pandemic/epidemic.
There are a finite number of ventilators available, and people to use them.
Get sick really early, or really late in the game. The resources to take care of you are going to be stretched really thin during the worst of the outbreak.
Healthcare workers (me included) will probably be affected in higher numbers, due to exposure early on, before the problem is identified.
That, in a nutshell, is why I always get my flu shot.