The new visual language means design is more important. You can't hide bad design with gloss and shadows. This is obviously bad for the Dribble crowd who often seem to favour style over substance, making the common mistake that design is about making something look good.
Design is how it works and functions, yes. But visual design is a major facet of that too. A large part of app design is the visual aesthetics. It's what helps make people download your app. It's most of what keeps them coming back for more. It matters too.
