Adding 'touch' to a UI designed for mouse/trackpad + keyboard interaction is inherently a terrible idea. Even my pinky finger is much bigger than the cursor. I

Adding 'touch' to a UI designed for mouse/trackpad + keyboard interaction is inherently a terrible idea. Even my pinky finger is much bigger than the cursor. I would have zero chance of being accurate with it. Also, that still requires the actual controls to be on-screen somewhere. With the touch bar, you can opt to not have those controls (e.g. a toolbar in an IDE, or a palette in a visual tool like photoshop) shown on the main display if they're available when contextually relevant, on the touch bar.