Yes, you should be prepared for things like pandemics, because it is not that difficult to have a small amount of preparation. But if you are not in China, you have no reason to prepare for coronavirus specifically. Saying things like "the flu is more dangerous" seems like a perfectly reasonable line of thinking - if you are in North America you should not be preparing for coronavirus any more than you already do for things like the flu. If you do not feel prepared for a coronavirus outbreak, it just means your preparation for the far more serious existing threats was lacking.