Why? Why not just have it let you know via a message pop up that location tracking is active? If you don't get that message because you don't have your device

Why? Why not just have it let you know via a message pop up that location tracking is active? If you don't get that message because you don't have your device that means you're not being tracked / are looking for your device and if you get that message because you have your device you've now been warned that someone has breached your account.