The point is that logistics are hard. Even if you have an "extras" list, there will be odd circumstances where you're forced to pivot.
> we had a year for preparing for this...
I hear this argument a lot. Health officials have been overworked just trying to stay on top of the pandemic.
They aren't experts in logistics. The only way to have been more prepared is already have a plan pre-pandemic. Once you're in the middle, it's chaos.