Mini 6 is FANTASTIC. Like tekmoe in post #2, I also use it in place of iPhone (with buds) at home... and also away from home: ONE device to do BOTH things. It's terrific! The T-mobile prepaid plan available on it- $10 for 5 months or 5GB- means I can max out on continuous 5G service for $60 PER YEAR. Since the vast majority of my use of such devices is NOT as a phone- much more for texting & mobile computing- I really don't feel like I'm missing anything.
I can certainly see the "jelly scroll." All that takes is getting any kind of image or web page that scan scroll up or down, holding the iPad in portrait, touching a finger to the far left or right, rapidly scrolling up or down to move the image and, using your peripheral vision, you'll see the other edge dragging a bit behind the portion you are touching. It's only a little behind and- if it bothered me- I could take a longer blink while scrolling so that by the time I re-opened my eyes, it had "caught up" to the rest of the image.
Net: ONE device instead of two... a fraction of the typical annual cell phone bill but still having full 5G... pretty much every app is typically enhanced with a bit more screen RE... iPads tend to not feel "long in tooth" as fast as it seems to go with iPhones so- like the "2" before this one- I expect to get 5 or 6 years out of this "6"... etc.
Cons: can't fit in a pocket (except suit jacket pocket), no 911 service (but can set up emergency services for 1 click speed dial), doesn't come with the MAX cameras (but can still shoot 4K, etc), and not using the Apple iPhone phone app (but there are plenty of great VOIP app alternatives). While these 2 don't affect me, those who like Watch or CarPlay have tech that seems like it must be "married" to an iPhone, so that's an added con for those who must have either or both of those.
In terms of pure goto utility/usefulness, I would rank it and AppleTV as best Apple products I own (and I own MBpro, Mac Studio Ultra, AirPods Pro, etc). Mini 6 is GRRRRRRRRRREAT!
