Make diner for yourself. You cook, stand over the oven, stove/toaster oven, etc. and it takes some time depending on the complexity of the meal. Then, you either eat it out of the pot/pan/dish, etc. or you transfer it to a plate/bowl, etc. You sit, eat and all is done some 10-15 minutes later. Dump the handful of items in the sink or dishwasher and you are done in minutes. Heck, you can lick spoons, use your fingers, etc.
Now do the same for yourself and one guest..then 2 guests, 3 guests, etc. By the time you are 4 people all told, you have an event on your hands. Your time is 10 to 20 times longer, your effort is so much more, the dishes, dirt, inconvenience...It is remarkable how it grows non linearly with each added person. And I would not advise you to lick a spoon.
Now imagine feeding say 37.5 million people. So imagine coordinating for 37.5 million people a vaccine plan. All the while needing a few hundred thousand people coordinated. With no authority to order, threaten, compel. You have financial issues and no authority to authorize spending. You have lazy people, uncaring people, etc.
I get one guest on the weekend and all I do is dishes and cook. What the F must it be like to have a 5 person home and to have a further 2-5 guests???? It would take 10 minutes just to get people to sit at the dinner table. On my own, I would be finished the meal in that time.