I think this is a misunderstood benefit: Light on the screen raises all colors, we just notice the blacks. So brightness scales a little to the brightness of the room.
Perfect. I currently use 140nit for gaming in a black room, so I personally am not interested in getting blasted by 1000nit if I can still get most of the range this way.
My plan is to get a triple mount on one arm and swing the left to center for gaming. I use the left for media and console/emulators now, so it will either be a black wallpaper with nothing on it, or media content.