Here’s the issue with a touch screen and a mac mini. It works as a monitor, but it doesn’t REALLY work as a touch screen. This is why there are zero devices running MacOS with a touch screen. What it DOES do, is turn the “touch” into a giant touchpad…like on a macbook. If you attach a second screen, you’ll notice it, because you can move off the primary “touch screen” and basically use one monitor as a touchpad for the other.
So…WILL it work, possibly, will it work as expected, probably not.