No: in other countries, they wouldn't send trigger-happy ninjas based solely on a dubious phone call.
In the few worse cases, it will mean some lost time, because the first responder cops will have to wait for assault teams. But in the 95% cases were a SWAT team wasn't need, it prevents unnecessarily violence escalation. And there are many more lives saved by non-escalation than lives lost to intervention delays.
Also, SWAT teams are considered elite forces (almost?) everywhere; but in some countries, elitism is based on sharpshooting abilities, in some others it's based on good judgement, clear-headedness and restrain.