Although he gets most of the blame for it, skeuomorphism wasn’t really Scott Forstall’s fault. He was just following the orders of his boss and mentor, Steve Jobs. The man who gave the world the first skeumorphic consumer operating system, the Macintosh, loved computer interfaces with gaudy textures that made them look more like real-world things.
In fact, if it were not for Steve Jobs’s love of skeuomorphism, Apple’s design language might have been a lot flatter a lot earlier. When Steve Jobs came back to Apple in 1999, the company was moving away from skeuomorphic design… but Jobs bought it back, with the famous brushed metal texture in the Quicktime app.