IME the Mini 6 not having 120Hz is the least of that display's problems. It's a cheap and nasty panel but people seem to overlook all of it's faults other than it not having a faster refresh rate.yeah it's a tough one as I do enjoy my mini 6 but the overall screen Quailty, 60hz and the way the device scales the Home Screen is quite bad in comparison to other devices. it's why I had the fold 4 as my mini replacement and hindsight I wish I had to kept that and not got the mini. it was more to be within the apple ecosystem.
all my devices I have all have 120HZ apart from my iMac and mini 6. and for me it is very noticeable. even my MacBook Pro is 120hz. iMac it's not really a factor like it is on the mini.
I will agree that the scaling is a definite issue on that device. To this day I don't think I've ever managed to see the battery percentage on the home screen. The Amazon app is a pain too because you can't read the reviews. No pinch to zoom kills that app on the Mini 6.