iPhone 6s Plus here. The answer for me is "sort of".
It does in the sense that you don't have to move your fingers around the screen quite as much to do a given task (so less adjusting your grip), but it's currently limited as third party developers work to get it implemented in their apps.
Turning the keyboard into a track pad makes editing text WAY better.
Something that isn't mentioned much that I love is being able to press the left side of the screen to go to the app switcher. That's awesome for multitasking and only knew about it because one reviewer mentioned it in passing.