Simplicity depends on the capacity of the information channel and what's simple for one device, can be primitive or intricate for another, since screens are information channels with a limited capacity. When you're designing for multiple devices, don't go by common cliches like "simple is good."
Chunking makes content easier to comprehend and remember. Chunking text help users understand the relationship between content elements and information hierarchy.
Hick's Law (or the Hick–Hyman Law) says that the more choices you present to your users, the longer it takes them to reach a decision. However, combining Hick’s Law with other design techniques can make long menus easy to use.