FKB Needs Permissions for the camera to determine if there is motion in front of it, and possibly the light level in the room.
With motion sensing, the backlight can timeout quicker, saving its lifetime, and only come on when something moves in front of it.
Tablets are not really distance watching devices like TV’s are, so running the backlight permanently, or even for minutes at a time with no one standing there, or at super brightness when the room light level is low wouldnt make sense.
I for one would like an 8 inch tablet at high resolution so it looks dynamite from 2-8 feet away. Not a 10 inch tablet, backlight on permanently, so I can read it 20 feet from across the room and see my tiny little ring camera all the time.
Saving the backlight life for old boneyard/ebay tablets repurposed as smart home controllers will save a lot of grief and money in the long run.