The article mixes simple-to-use software with software which functionality is easy to discover. These are very different. There is a lot of programs that are s

The article mixes simple-to-use software with software which functionality is easy to discover. These are very different. There is a lot of programs that are simple to use if one manages to discover the functionality. This is bad on mobiles where the desire to save on screen real estate often goes to far with no clues left that one can do something simply with a particular gesture. But even on desktop this has been bad starting with that MS Office interface when one has to search internet to discover how to do basic things. And MS has not learned the lesson and tried another undiscoverable interface with Windows 8. But at least discoverability is possible to fix if developers willing to listen to the users. iTunes problem is different. It is a typical feature creep where new functionality makes it harder to use what was there before. This is difficult to fix as scalable interface that allows to do a lot of things in a simple way is a hard problem.