It will very easy to steal the ROG Phone 2.
Anyone could grab a locked device and pull down the quick access shortcuts and put the phone on airplane mode and walk away. As owner I will have no way to track it with the airplane mode on.
For the time being I have solved this by removing the airplane mode icon from quick access, but this is not good in long run.
It would be better to add an option in the security setting to disable quick access shortcuts on a locked screen.