Based in Shanghai since 2014, I can share some details on why it feels so unbearable to be here right now.
Firstly, the totalitarian government have never been good at communicating anything except propaganda. So on one hand we're inundated with "Go Shanghai!" and how brave volunteers distribute food, on the other hand, we're completely in the dark about what's going on. Goalposts are being moved daily, rumors proliferate, and things change every day, adding a lot of stress to an already suboptimal situation.
Second, I can confirm that the food situation is extremely bad. We are a family of two, and always been kind of preppers, so we had many bags of rice, pasta, dehydrated veg, frozen meats in our large fridge. Chinese society, en masse, is much more used to just ordering food daily. Many people never cook. It's cheaper this way (though of course the quality varies). Bigger families with aunties who can cook just used to pop by the local wet market daily and get a bag of fresh produce. Many households might not even have a fridge at all, or have a small one.
The government was saying that "there will be no lockdown", and when the lockdown became imminent, people barely had two days to stock up. Queues, fights, empty shelves everywhere. More stress.
A lot of people in our community do not have any food left, and we've received two government issued "rations" so far (in 12 days of lockdown): one with 5 tomatoes, and one with 3 pounds of chicken drumsticks, 3 potatoes, 1 head of cauliflower, and a bunch of rotten lettuce. If we did not stock up, we would be starving right now. We donated quite a bit of food to our neighbors already, and many people are actually very close to having no food at all. Getting a delivery is almost impossible, group orders organized by compounds are often ridiculously overpriced, and not always work out. Scams are emerging.
Thirdly, I understand the author's frustration with the guards ("baoan"). Those people never had any formal power, but now they "run things" and, for many, the newly obtained power went to their heads. Violence and abuse is abound. We have PCR tests every 1-2 days, sometimes at 6am, some compounds at 3am. People dragged from their beds and forced to stand in queues.
How would you respond to all that?
Yes, it has some potential to save lives, but if it was communicated better, if we had more time to prepare, and they could still run food deliveries, nobody would complain that much. It's terribly mismanaged, and even after we "open up", I will strongly reconsider staying here. Omicron will return, and I do not want to be here for the next (and next, and next) lockdown.