Except people are just upset about Flock and remain largely ignorant of other methods, again, like cellphone stingrays.

During the process of forcing connections from all compatible cellular devices in a given area, the StingRay operator needs to determine which device is the desired surveillance target. This is accomplished by downloading the IMSI, ESN, or other identifying data from each of the devices connected to the StingRay.[14] In this context, the IMSI or equivalent identifier is not obtained from the cellular service provider or from any other third-party. The StingRay downloads this data directly from the device using radio waves.[19]

https://en.wikipedia.org/wiki/Stingray_phone_tracker

To make people aware of those, we need to stop talking about just Flock and draw the line at "every use of surveillance needs a warrant".

People don't realize how much we've lost since 9/11, this is a chance and we need to capitalize on it and claw back as much ground as we've lost