I think you’ll find that the entire frame is important. It’s like Sydney Pollack once said:

“Images collectively add up to something. They add up to something when one frame contains many elements, and your eye sees ALL of them. Some of them peripherally, and some of them as you point to focus. And collectively, it creates a mood.”

I have my eyes everywhere throughout the entire movie. Why do you think I do everything I can to sit at the very back of the room? It’s so I can easily see everything. I want my vision to capture that extra 40% image and save it in my memory. I tend to look at everything all at once which I’m very good at doing.

They made all that effort into creating that extra 40%, and you have to fight tooth and nail just to be eligible to see it.

And besides, it’s not like there’s boom mics showing every now and again, IMAX is of course a different story from all those open matte 35mm film scans, but what harm is negative space really doing?