Antibiotics will help with secondary infections of course. But they do nothing to stop the cytokine storms and inflammatory casades which were the major cause of death in 1918 and are killing some, but very few, young people in this pandemic. Anti-virals are somewhat effective but must be taken before or at the time one is infected to be of much use.
The problem would be, should another 1918 strike, the delivery of care. Supply chains snake around the world. There are barely enough mechanical ventilators for a normal flu season. Something big hit and hospitals will be swamped. Already happened in the Southern hemisphere with this flu.
People die if the flu and complications of it every year.....
As they do from skin cancer, falling in the bath tub and heart attacks. Not exactly a reason to shrug it off, is it? This flu is very different. It is hitting younger people and it is killing them.
The sky is not falling.....