Sorry, but you are wrong, at least for California. A dispatcher has the obligation to collect enough information to properly classify the call. If the information leads the dispatcher to believe that a criminal violation has not occurred, it is well within their authority to say "Sorry Charlie", we aren't coming. If I heard my dispatcher giving out a call to one of my deputies, I would be calling dispatch to see why on earth that call was going out, especially without talking it over with me first! If it was because the caller was a jerk and insisted that we respond, I would be the one going out to talk to the caller - and it wouldn't be to take a report! If our dispatchers didn't screen the calls, we wouldn't have time to do anything.
No local law enforcement in my area (including myself) care a bit enforcing FAA regulations. We have local and state laws to enforce, and none of our city or county codes have anything to do with FAA regulations, so don't make any blanket assumptions about what law enforcement will or will not do. Speaking for the portions of California that I have contact with, unless it is a VERY boring day (which almost never happens) you can call and complain about a drone all you want, but unless it actually runs into somebody, I'm not coming.