There recently was this article that explained why it may have been so. Center-framing was one aspect. It made the action easy to follow and less messy. It would become a more palatable digital feature than so many elements over the screen that draw your attention, while the center shows nothing in it. Maybe Michael Bay could take a hint.
Of course, it's a Mad Max film, and perhaps that kind of story is interesting by itself. Post-apocalyptic future where oil and gas have run out, civilization has collapsed, gangs make modified battle cars, and all. The quotes from Mad Max Fury Road seem to be a bit philosophical compared to previous films. But hey, these days, even action flicks tend to shoehorn some philosophy in them.