Most likely because of their systemless nature.
Moreover, we also have a tutorial on how to root Android P. Here we are going to show you how to root Android 8. Now being an Android user, you must be wondering how to root the latest Android 8. Moreover, if you want the Oreo update at the earliest, then sign up for the Android beta programreceive OTA notification, apply update, and unroll from the program. The firmware update comes in the form of OTA updates and system images. This will gain root access on most of the official or custom Android 8. Update : This rooting tutorial has been updated to work with Android 8.