That changes the effort required to show useful information from zero to more than zero. Which, while it not be a great quantitative change, is an enormous qualitative change.
Like Chesterton's Fence, it was there for a reason.
"At last (and at least) we have reclaimed that narrow vertical strip of screen real estate on the screens eastern-most vestige! Now to find a good use for it!"
The true annoyance is that in many cases explicitly enabling them does not restore the original functionality.