spiritual nonsense so they can cope
Excluding a talk on religions, the placebo effect of believing in God, Allah, Budha, can be a strong support for anybody. If you believe in you, you know that a million thousand accidents can kill you in a second, or your job can be affected by a zillion factors you can't control. If you believe in money, you'd be pretty ignorant not to understand that many of the previous factors can affect you radically, including burying you, your family, etc. So on.
Bottom line, I'd be slow to judge other people as stupid because any given person can have a very limited amount on information about what is and what isn't, no matter how much time did we have to think about it.
And regarding the mindless panic, we see pretty clear what happens in the countries where people were "courageous" and hot witted. Check New York, Italy, Spain, the British PM whom is the best example of punished ignorance.
Medically speaking, when you have a virus that expands so quickly and kills so many people in such a short period of time, the smart decision is to take precaution measures. People tend to forget that in December it was present officially only in China, and in a couple of months it reached all the world.
The virus spread because China wasn't forthcoming about the pandemic in the first place and deliberately silenced people who where actively trying to warn everybody else in order to protect their public image. Beyond that, everybody else has to try to contain the panic first and foremost. The more people panic, the more people die.
However, trying to get back to the original topic. As an atheist if access to the internet, it is easy for me to dispel superstition and belief in the supernatural, as well as religions in general. The information is easy to find and those who provide it are proving harder to persecute as time goes on. This is a good thing. However it has only been this way for that 25 years or so. I can't fault people who don't have access the knowledge that we possess today for believing things they can't substantiate. The world was harsh back then (and in many ways still is today). The thought that you might freeze to death tomorrow, or not have anything to eat for a month was scary. The idea that wolves can come along and rip you limb from limb was scary. The fact that people died for seemingly no reason was scary. There was nothing you could do about it back then. Religions and rituals gave people hope that something could watch over them and keep them safe.
That kind of fear is crippling for the average person. It's easy to impose modern standards on ancient people, but I think it's the wrong way to look at things. Instead, that should be a measure of how far we've come in our understanding of reality. We've come a long way. There's no reason to stop now.