I've always thought the way to prepare for / survive such hardships is to have a strong community, not some elaborate individualistic prepper bunker scenario.
A "strong community" full of people with no resources isn't going to work so well, though.
Best way to get into that "small community" is to have something to offer. Of course, it may not be a "bunker", but if all you're bringing to your "strong community" is another mouth to feed and some free time, don't expect the community to celebrate your arrival.
Indeed, they may not even let you in. It would be a time of strong communities, yes, but not the "let's all hold hands and sing kumbaya in our glorious unity"-style strong communities. It's going to be working hard together to survive. Those who don't have something to contribute aren't going to find themselves very welcome.
Basically, what I'm saying is, don't think "oh, I'll just have a strong community to fall back on so I don't need to do any prep". Especially if you're not already in one! If nothing else, prep today as your contribution to that strong community tomorrow.
(And I mean "prep" as the document does, sensible precautions to increase your robustness and decrease your reliance on resources that will be stretched thin in event of catastrophe, things that might actually happen, not necessarily piling 4 years of food into a bunker. Considering one of the "things that will never happen" just happened you have a more clear view than ever of what sort of things might go wrong, and, well, even if the virus is basically done there's plenty of reasons to believe the consequences of it are not.)
Even if you are a prepper, there is always the risk that you aren't able to get home. Maybe you are on a trip across the ocean, maybe you died in the initial attack. As such you should tell your friends who might be able to get to your bunker how to get in without you. Maybe you save a friend even if you can't save yourself.
Also it is easy to have enough food to last for a year or two, but what after that? It is a lot easier to survive if you have a village with you. A village protects against loneliness/depression. A village planting fields makes it more likely not all of them fail (rain/hail is often unevenly distributed even across a small village). A village makes it more likely that useful skills survive - medical doctors (even without modern infrastructure they can still do a lot), various trades can often figure out useful things (if there are enough engineers and some sort of easy power source you might even be able to get an electric grid for your village). With enough people it is more likely someone actually knows enough about gardening to help you grow food.
Best way to get into that "small community" is to have something to offer. Of course, it may not be a "bunker", but if all you're bringing to your "strong community" is another mouth to feed and some free time, don't expect the community to celebrate your arrival.
Indeed, they may not even let you in. It would be a time of strong communities, yes, but not the "let's all hold hands and sing kumbaya in our glorious unity"-style strong communities. It's going to be working hard together to survive. Those who don't have something to contribute aren't going to find themselves very welcome.
Basically, what I'm saying is, don't think "oh, I'll just have a strong community to fall back on so I don't need to do any prep". Especially if you're not already in one! If nothing else, prep today as your contribution to that strong community tomorrow.
(And I mean "prep" as the document does, sensible precautions to increase your robustness and decrease your reliance on resources that will be stretched thin in event of catastrophe, things that might actually happen, not necessarily piling 4 years of food into a bunker. Considering one of the "things that will never happen" just happened you have a more clear view than ever of what sort of things might go wrong, and, well, even if the virus is basically done there's plenty of reasons to believe the consequences of it are not.)