Where's the opt-out button on my device to ensure my 4th Amendment right is exercised?
Oh, right. It's forced. "Freedom".
Plus, it's probably arguable as to whether or not your cell providers' location data on you constitutes a "search" or not. Unless E911 works by transmitting your devices' GPS readings from its own hardware to authorities, but even then I am not sure since they are doing so as a middleman. IANAL
Also, you might wait but I'm not sure that most folk in distress would agree with you.
That's exactly how it works:
> When the cellular phone detects that the user is placing an emergency call, it begins to transmit its location to a secure server, from which the [Public Safety Answering Point] can retrieve it. Cellphone manufacturers may program the phone to automatically enable GPS functionality (if disabled) when an emergency call is placed, so that it may transmit its location.
https://en.wikipedia.org/wiki/Enhanced_9-1-1#Wireless_transm...
It's the only reason in my mind the government should have access to that info, and it's a damn good one