A typical "Upgradable" PC is in a box 10 times the size of the mini. If you upgrade the GPU on a PC, you toss out an older GPU because it has pretty much zero resale value. Typical Apple hardware is used for 10-15 years, often passing between multiple owners.
It's a shame we don't have charities that would take such parts and then distributed them to less fortunate countries. Ten years ago a ten year old graphics card would no longer be quite usable, but now 10 years old card should work just fine for most of the tasks, except more advanced gaming.
I don't see the point. There is nothing to put it into. It's far cheaper to just ship modern CPUs with integrated graphics which will be faster and more efficient than that 10 year old GPU. The era where computer components were big enough for it to make sense for them to be discrete parts is coming to a close.
This is particularly true on the lower end where a 10 year old part is even interesting.
A typical "Upgradable" PC is in a box 10 times the size of the mini. If you upgrade the GPU on a PC, you toss out an older GPU because it has pretty much zero resale value. Typical Apple hardware is used for 10-15 years, often passing between multiple owners.