The Switch UI is intentionally simplistic to keep it in memory while software is running — and let one of the apps (eShop, Photos, News, Settings, etc.) to run.

The Switch UI is intentionally simplistic to keep it in memory while software is running — and let one of the apps (eShop, Photos, News, Settings, etc.) to run. The Wii U Home Menu, by comparison, could not run while a game was loaded.