Yup. Well said. And another reason I love #GrapheneOS. Auto-reboot function puts the phone back into BUL (before unlock) mode so if your device is taken, it's only a matter of time before it reboots into BUL mode. 

And there's lockdown mode if you think your phone might soon be taken. Just longpress on the power button and choose lockdown and the phone will go into BUL state. Afaiu there are also some other things like a duress feature where you enter a different unlock pin that will erase the contents of the phone.

I also highly recommend setting up PIN scrambling to mitigate against "over the shoulder" pin extraction :)