Seems apple loses a dinosaur then...
So where has the Quad Mini gone, where has the RAM upgrades gone, where has the access point gone?
Watch
THIS pretty fair assessment unless you wear blinkers.
My i5 is not slow, it has 20 gigs of RAM and is active and ready for use in 3 seconds, dock icons bounce once and the app is open. That works for me.
The Quad mini was an apple anomoly it was available for precisely one refresh cycle and the reasons for ditching it were for production and as the quad cores required a different motherboard on Haswell. A dual core is fine for all but the most proffesional apps and gaming. The mini is not a gaming PC or a desktop for proffesionals it is a small competent media centric device that runs all apples apps speedily and well.
Upgradeability is going, buy what you need and realise that these days the need to upgrade RAM is non existent. If you buy for your needs the computer will be obsolete before RAM becomes an issue. You can't blame any company for wanting you to spend the money on their product and not aftermarket upgrades, they are a company not a charity....
It's the same with cars much harder to work on than 15 years ago, TV's just about impossible to fix, and other computer makers bringing out sealed non upgradeable units.....
This does not cripple a product it just makes it a product you have to spec to your needs when you buy. If you need a car to pull a trailer don't buy a mini and try to beef up the engine or increase the torque buy a range rover...
As you say it's not what you want but your use case (implied as you haven't spelled it out) shows no need for what you want just like it shows no need for 20gb of RAM of which I am sure at least 12 of it is wasted.
Your dislike of SSD's is irrational HDD drives have been the bottle neck for computers for at least 10 years and SSD's mitigate this, it is the best thing to happen to computers in a decade. Not wanting to add a couple of hundred dollars to the price (and it'll still be cheaper than what you paid for one 3 years ago) of an already premium product for the premium SSD experience stability and silence it gives is in my opinion idiotic. To continue the car analogy it's like choosing to have drum brakes over discs with ABS.
But each to their own buy what you like, have a worse experience if you like but don't argue that going backwards is the way forward, it just isn't. It has been the massive adoption of SSD's, by mainly mac users it seems, that has driven down prices and made them a mainstream and now affordable option and soon to be the standard...