These are obviously complete trash. Waking people up in the middle of the night for some random child that was abducted half a Belgium away with no real call to action even if it were in the same very small town.
What we need is political pressure for a pay-to-play solution. You fire an alert at my phone, that's $100 deposited within a week against my phone bill or offered via mail for the pay-as-you-go burner phone types.
Then if the phone goes off I know its something real. Right now it's just a waste of resources and annoyance, probably killing more people than it is saving via sleepy or distracted drivers or medical professionals.