Once a UI design is perfected, as is the case often, companies continue to look for ways to change it simply for the sake of changing it and so they can announc

Once a UI design is perfected, as is the case often, companies continue to look for ways to change it simply for the sake of changing it and so they can announce something new. This is true of both Apple and Google in the mobile phone space. Every single time, the new UI is worse because it hasn't been tested and no designer can think of everything. There was nothing wrong with UIs before the flat design. Flat design didn't solve anything. But once Apple implemented it, everyone had to have it. If you don't have it, your app is not "slick" and "cool." And yes, those subjective qualities matter way more than the quality of your app or really, anything else.