Why android let the user access power option menu in the lock screen

In the lock screen, you can access power option menu by press and hold your power button.

For me, this is no secure at all. In this menu, You can enable the airplane mode or even turn the phone off. This also make me wonder if Google's Android device manager will work in case my phone is stolen, as anybody can just disable my phone's connectivity and I can no longer use any of function in the device manager.