I enabled reachability on my iPhone X. Works just like before. Only thing is that when you enable it on the home screen, the icons on top don’t come down with the rest. I noticed this when I tried to reach the control center on the home screen through reachability. You can still swipe down where the icons are suppose to be and it will bring up the control center. It’s just it would look better if the icons can down with the rest. They come down if you’re in an app. Just not on the home screen