A new feature os iPadOS (AKA iOS 13 for iPad) is the ability to use a regular bluetooth mouse as a pointing device. You can set this up through the Accessibility settings. With assistive touch, you can not use a mouse or trackpad and there are even ways to access things like the home button. While this is meant for those with disabilities, I'm sure others who particularly dislike using a touch screen all the time will get some use out of it.
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