Additionally, adb root is only accessible if USB debugging, which is off by default, is turned on, and any sort of root access would still require physical access to your device," OnePlus said in ...

Additionally, adb root is only accessible if USB debugging, which is off by default, is turned on, and any sort of root access would still require physical access to your device.

Both adb enable-verity and adb unroot are simply offered to reverse the effects of the adb disable-verity and adb root commands, respectively.