Wrong, all Mini users I know use it as a MacPro replacement and they do care about upgradability.
For aunt Netty: buy a sub 100$ crapdroid tablet. That does what you assume the average Mini user does with its mini.
Maybe all Mini users you know use it as a MacPro replacement, but to assume all Mini users care about upgradability is wrong.
How up gradable is a pre 2014 Mac Mini anyway?
You were stuck with the CPU it came with. You could up grade from the standard 4 GB of RAM to a maximum of 16 GB. You could swap out the HDD for a larger capacity one or a SSD
in short, not a lot.
While the loss of the quad core model for 2014 is a blow for the few who really did have a need for it, the typical Mac Mini user doesn't for day to day needs. There is a range of 2014 Mac Minis, with up to the same maximum of 16 GB of Ram, and HDD, Fusion or SSD, available to suit a range of needs, dreams and means
And the Mac Pro is available for those who really do need multi-core grunt and expandability
. at about 33% more than a maxed out Mini.
Aunt Netty probably cannot be bothered with a delicate little tablet to tote hither and yon. Likewise for many others.
A decent sized monitor, and a proper keyboard make for much easier use, as does OS X, compared to the alternatives out there. Additionally, it's good to be able to walk away from my desk, and be off line.
I do need a computer for work to knock out documents, make spread-sheets and keep records, as well as for photography, communications and so on, but I don't need anything powerful and fancy. My 2009 Mini soldiers on just fine, but if it required repairs or an upgrade that was not going to be cost effective, I would not hesitate to replace it with the 2014
. or whatever is current when the time comes.
The 2014 Mini may be underwhelming as an update but, with performance and usability at least as good as equivalent predecessors (with the exception of the quad-core), it is far from crippled.