Not questionable at all. Put them side by side and you'll see that the mini's screen real estate is much bigger both in terms of perception and reality. Long and skinny really cannot cut it for activities like reading and browsing.
Huge bezels? Perhaps large in comparison to the Pro, but my niece also looks large as compared to Kaia Gerber, but actually she's a size 8 (size 4 US).
All buttons are off centre (just checked my 9.7 Pro and it's quite marked). It's just more apparent with the mini because of the size of the bezels.