I do like the quotation, as fear can be quite debilitating, especially when it is somewhat irrational. However, a certain degree of rational fear is also functional in keeping us alive. For example: Here in the UK, it might be deemed as irrational to be afraid of spiders or snakes because none of our nastive species will do anyone that much harm. However, elsewhere in the world, where these things are venomous and can kill, it would seem like common-sense to be afraid, or at least wary of such things. Corona virus is a killer for some people, and therefore to have a rational fear of such a thing may well motivate behaviours which will, keep people alive for longer than they might otherwise be. l do like Bowsprit's concept of leaving politicians out of the decision making process, but then again, I think this should pertain to everything else as well as virus control.
We should perhaps bear in mind that the biggest killer on Earth by far - is the human species, so maybe our fear should be proportionate to what kills the most.