You are largely correct about everyday location privacy but I was thinking more in the adversarial direction (read military/ GPS denied zones) when I started this work. There have been news about GPS being denied/spoofed over european region. When your phone can't get the GPS signal, it would try to retrieve alternative signals (A-GPS, cellular network etc) - this is where an adversary could be listening for leaks. So GPS denial could effectively be a trigger and the follow ups after that trigger could lead to leaks.