No which makes it useless
So it seems useless?
Is anyone getting any useful benefit out of this?
Tried it. does absolutely nothing.
On Studio Display and the edge light makes no difference with face lighting.
Another worthless feature no one asked for bloating the OS.
I'm in a pretty dark studio with my Studio Display, and in that situation it makes a dramatic difference. (To this point, I'd typically throw up a window with light-coloured solid contents.)
Of course the light from a Studio Display isn't going to do much when augmenting an already well-lit room.