In this tutorial I go through how to activate and use Apple Universal Control on both your Mac mini M1 and iPad Air 4 (2020) or iPad Air 5 M1 (2022). Is it useful though? You can drag and drop files between your Mac and iPad instead of using AirDrop. You can use one Mouse, TouchPad and keyboard with both devices seamless. And you can use two operating systems at the same time, iPadOS and MacOS.
So It could be useful if you also work on your iPad like I do. So I will definitely use it quite much.