I'm certainly not suggesting that. Read on. An emergency dispatcher could send a Text message back with a link to a private, case-limited, web page with an ETA

I'm certainly not suggesting that. Read on. An emergency dispatcher could send a Text message back with a link to a private, case-limited, web page with an ETA + a map + the ambulance location in real time. See? no "real-time public broadcast of all the addresses a medical event has occurred at".