Apple - Is it possible to use a touchscreen monitor on a Mac Mini?

Yes - they connect over USB like a mouse and over whatever display method you want to push the video.

Since the OS isn’t touch based, you basically emulate the mouse and it’s not going to change the OS how it behaves.

Absolutely, depending on which screen you buy. (TouchBase) is the key to getting it to work. Once at the website, join and log in first. Then follow simple instructions that they give you... Pay for the (drivers) then download and install... I do music production, needless to say it sped up my work flow by far... And it was worth the 90 bucks.... Oh and finger gestures work as well, I'm still learning that part. Also TouchBase's control panel allows you to alter configurations within for an ultimate experience... I'm running a Mac mini (2018) i7, 16gb... with AZUZ ZenScreen Touch MB16AMT