I think what the thread writer is asking is if you call Hatzala for what probably are non-emergencies on a consistent basis (when in doubt obviously err on side of caution).
Or if you have an individual with a serious medical need but would be classified as somewhat of a non-emergency. And this individual for whatever reason needs ambulance transport
For example, a patient that is in no immediate danger, but is prescribed to start I.V. medication for cellulitis. Assuming that the city EMS will take you to your hospital of choice, it does not matter if Hatzala or the city takes you.