If they can be summoned by just placing an anonymous phone call with an unverified claim, that might be a problem though.
Despite that the teenager will likely be going to jail, the most damning indictment is of the police forces that were repeatedly co-opted by the teenager. It should really take something much more clever to trigger this kind of systemic response repeatedly.
I'd challenge that view by claiming that if the threat is of someone holding their family hostage threatening to kill them (just a guess at what these "swatters" might say to the dispatcher to get cops to actually kick in some doors, I don't know what their state-of-the-art accusation is), then sending one cop car, poorly equipped, sounds a bit silly for multiple reasons.