Sirens are a crude tool, which was fine in 1985 when there were no other tools available. And they're still useful if we were more strategic about the way we used them. But we've expanded their use to the point where people consider it a measure of caution rather than a true emergency, particularly when you can pull up your phone or turn on the TV and get much more precise info upon which to decide.
It would be one thing if this were just a one-way problem of being overly cautious, but it goes both ways. I either forgot or never knew that these sirens have to cycle off occasionally to prevent damage, which came up the night that Pleasant Hill got hit and our sirens were cycling on and off repeatedly. Are most people going to know that sirens may cycle off and that isn't necesarily an indicator that the threat has passed? Of course not.