The controls on the Switch were strongly influenced by the fact that the game was first released for the Wii U four years earlier.
The Wii U had a touch-screen that's used for clicking on enemies, interacting with objects, and firing turnips. On a hand-held Switch you can still use the touchscreen, but on a docked Switch, it's replaced with an on-screen cursor controlled via the gyroscope in the Joycon or Pro Controller.
The Wii U had a microphone that you could blow into to activate propeller platforms. On the Switch, these platforms are replaced with automated lifts.
The Wii U had gyroscope controls that allowed you to aim turnips while riding mine carts. On the Switch, you use buttons to aim your view.