yup, you can never “boy who cried wolf” yourself about possible and realistic emergency situations. Sure it sounds like a joke - but it either:

is, nobody does anything, and nothing happens

is, gets taken seriously, and some time and resources are wasted

or

isn’t, gets taken seriously, and a disaster is avoided

isn’t, nobody does anything, and people end up dead or injured

a small waste of time and resources is always a better outcome than possible death and injury