Trivial counterpoint: you cannot correctly operate a touchscreen without looking at it (unless the display is essentially one single interactive object). Trying to use a music player via a touch screen while running or cycling is basically impossible unless you look the screen. For this purpose, buttons are better.
When defining "better" you need to indicate the metrics you are using. LM's might be "better" when measured with certain metrics, but like most things are worse when measured using other metrics.