I put matte screen protectors on all of my touchscreen devices. I like how they eliminate fingerprint smudges and glare, and give just a little resistance for the Apple Pencil, Adonit Dash 3, Google Pen, and Lenovo stylus on their respective device. They also allow my finger to slide smoothly over the screen.
Just a few minutes ago I applied an iCarez matte protector on my Mini 4. (Both Mr Shield and iCarez provide plenty of components to ensure a perfect application.) It's going to be a while before I get a Mini 5, so I figured I'd spend more time on my Mini than my 2018 iPad in the lead-up to getting the Mini 5.
It's great to see so many getting the new Mini and enjoying them!
edit: I see that I'm not the only fan of iCarez matte protectors.